COMPOSITIONS AND PROCESSES FOR MODIFYING HAIR COLOUR

Abstract

HAIR COLOR MODIFICATION COMPOSITIONS AND PROCESSES The disclosure relates to hair color modification compositions and processes, compositions comprising at least one color-removing agent selected from thiosalicylic acids and / or their salts, and at least one solvent. Figure for the abstract: none

Description

Title of the invention: COMPOSITIONS AND METHODS FOR MODIFYING HAIR COLOR technical field

[0001] The disclosure relates to compositions and processes for modifying the color, tone, and / or shade of hair. The compositions and processes can be used to modify hair color by removing various colors, tones, and / or shades from the hair. CONTEXT

[0002] Consumers often wish to change their hair color. For example, as a person ages, the hair follicle loses its natural pigment, resulting in gray, silver, or white hair. It is common for consumers to dye their gray hair, for example, to match their natural hair color. Similarly, consumers may wish to change the color, tone, and / or shade of their hair from their natural color or a previous hair dye job; for example, they may wish to change to a completely different color, lighten or darken their hair color, make their hair color warmer or cooler, etc. The most common hair dyeing processes are permanent, semi-permanent, and temporary hair dye.

[0003] Semi-permanent or temporary hair dye compositions typically use pigments, oil-soluble dyes, or direct dyes that are deposited onto the hair fiber to impart color to the hair. Generally, these hair dyes are removed by washing the hair after one or more shampoo cycles.

[0004] Furthermore, permanent hair dye compositions use oxidation dye precursors, which are also known as primary intermediates or couplers. In order to offer various colors, tones, and shades of permanent hair color, dye compositions contain various combinations of different types of oxidation dye compounds. These oxidation dye compounds are small, colorless or faintly colored compounds that, when combined with oxidizing agents, form colored complexes through an oxidative condensation process. Permanent hair coloring compositions also contain ammonia or other alkalizing agents that cause the hair shaft to swell, thus allowing the oxidative dye molecules to penetrate the cuticle and cortex before The oxidation condensation process is not yet complete. The larger color complexes resulting from the oxidative reaction are then trapped inside the hair fiber and cannot be removed by washing, thus permanently altering the hair color.

[0005] Since permanent hair dyes cannot be removed by washing the hair, if an individual who has previously changed the color or tone of their hair with a first oxidative dye composition wishes to change the color or tone of their previously colored hair, some or all of the color imparted by the first oxidative dye composition must be neutralized. For example, a consumer may wish to remove the first color or tone in order to return to their natural hair color, or to obtain a second color different from the first color by using a second oxidative dye composition. In such cases, it is necessary to remove all of the first hair color, either to allow the natural hair color to be visible or to prevent the first color from interfering with the appearance of the second color.As another example, a consumer may wish to achieve a second tone or shade within the same color family as the first color, such as changing hair color from dark brown to light brown, and may therefore wish to remove some, but not necessarily all, of the first color. Alternatively, the desired change may be more subtle, for example, making the first color warmer or more vibrant. Thus, depending on the specific combination of oxidation dye compounds present in the first dye composition, and the desired second color or tone, different levels and types of color removal are required.

[0006] Although there are known processes that are effective in removing the first hair color, these processes have drawbacks. For example, a common color removal process uses oxidizing agents, but these compositions are aggressive and cause damage to the hair, making it fragile, brittle, and giving it an unhealthy appearance. This can be particularly problematic since the hair has already been subjected to harsh chemicals such as alkalizing and oxidizing agents in the first oxidative dye composition, and the integrity of the hair fibers is therefore already compromised. Moreover, these compositions can essentially remove all of the hair color, and consequently, the subsequent application of a second oxidative dye composition is necessary to achieve the desired second color or tone.This step, known as . "Touching up" the color exposes the hair more to harsh chemicals and leads to further damage.

[0007] Given the damage associated with the use of oxidizing agents as color removers, a second option is to neutralize the first molecules of oxidative dye with color-removing agents such as thiol-based compounds. However, these compositions have not been as effective at removing color as those using oxidizing agents. For example, some oxidative dye compounds, particularly those that impart darker colors such as blacks, ash browns, chestnuts, ash mochas, natural ash (blue or green), ash violets, violets, red violets, reds, red mochas, red browns, mahogany, red coppers, coppers, and golds, are more resistant to removal using thiol-based color removers than to removal using oxidizing agents.As such, the color result obtained with these color-removing agents may not be satisfactory when used on hair that has been dyed with such compounds, and the remaining color will interfere with the colorist's attempt to achieve the desired color, tone, or shade. Furthermore, the compositions used in this process have the disadvantage of emitting a strong and unpleasant odor during the color removal process, which consumers find particularly nauseating.

[0008] Although attempts have been made to solve this problem, for example by adding perfumes or odor-trapping components to the composition or by using different color-removing agents, to date there has been no effective process for removing oxidative hair color while minimizing or eliminating both hair damage and the foul odor associated with known processes.Thus, the choices available today for consumers who wish to change the color of their previously dyed hair are either (1) to remove all of the hair color with a color-removing composition containing harmful oxidizing agents, and then expose the hair to further damage with a second oxidative dye composition to achieve the desired color or tone, or (2) to remove only the hair dyes of the first color that are likely to be removed with other color-removing agents such as thiol-based compounds, and attempt to achieve the desired color or tone with a second oxidative dye composition despite the first color remaining.Furthermore, many known hair color removal compositions may not ensure lasting hair color removal because oxygen in the air can cause the dyes to reoxidize, reversing the color removal effects.

[0009] It has now been discovered, surprisingly, that a new color-removing agent, thiosalicylic acid, allows for the controlled removal of artificial color from previously dyed hair, providing desired changes in hair color, tone, and / or shade. The compositions are unique in that they can thus be used in color-removal processes to achieve desired color, tone, and / or shade(s), just as consumers experience when undergoing a hair-dyeing process, even without a filling step. Furthermore, the compositions are free or substantially free of oxidizing agents, and therefore minimize or eliminate the hair damage typically associated with hair color-removal compositions and processes, and produce minimal or no odor during the color-removal process. SUMMARY

[0010] The compositions and processes can be used to remove artificial hair color, particularly from hair that has been previously dyed with an oxidative dye composition. In various embodiments, the compositions and processes can remove all or part of certain dyes, while having minimal or no impact on other dyes. As such, the color left on the hair can be "adjusted" to achieve the result desired by the consumer. The compositions and processes are capable of achieving a desired hair color, tone, and / or shade even without the application, or with minimal application, of subsequent hair coloring compositions. Surprisingly, the compositions have little or no odor, unlike currently known hair color removal compositions.

[0011] In various embodiments, the disclosure relates to compositions for treating keratinous fibers such as hair, for example, for removing hair color. The compositions comprise (a) at least one color-removing agent selected from thiosalicylic acid and / or its salts, and (b) at least one solvent. The compositions optionally comprise at least one additional color-removing agent and at least one additional compound selected from clays, surfactants, fatty compounds, thickening agents, organic acids and / or their salts, amino acids and / or their salts, aminosulfonic acids and / or their salts, organic amine compounds, or combinations of two or more of these. The solvent may be selected from water and / or non-aqueous solvents.The pH of the compositions is acidic, ranging for example from about 1 to about 6, such as from about 2 to about 5.5, from about 2.5 to about 5, from about 2.75 to about 4.75, from about 3 to about 4.5, or from about 3 to about 4.

[0012] In various embodiments, the total amount of color-eliminating agents may range from approximately 0.1% to approximately 20%, from approximately 1% to approximately 18%, from approximately 2% to approximately 15%, or from approximately 4% to approximately 12% by weight, relative to the total weight of the composition. In some embodiments, the total amount of color-eliminating agents ranges from approximately 1% to approximately 15%, from approximately 1% to approximately 10% by weight, or from approximately 2% to approximately 8% by weight, relative to the total weight of the composition. In other embodiments, the total amount of thiosalicylic acid and its salts ranges from about 0.1% to about 20%, such as from about 1% to about 18%, from 2% to about 15%, or from about 4% to about 12% by weight, relative to the total weight of the composition.In still other embodiments, the total amount of thiosalicylic acid and its salts ranges from about 1% to about 15%, from about 1% to about 10%, or from about 2% to about 8% by weight, relative to the total weight of the composition.

[0013] In various embodiments, the compositions comprise one or more additional components selected from organic amine compounds, organic acids and / or their salts, amino acids and / or their salts, aminosulfonic acids and / or their salts, surfactants, thickening agents, fatty compounds, clays, or combinations of two or more of these. In some embodiments, the compositions comprise at least one keto acid and / or one of its salts. In some embodiments, the compositions comprise at least one organic amine compound.

[0014] In other embodiments, the disclosure relates to methods of treating hair using the compositions according to the disclosure. For example, the methods may be methods of removing dyes, for example, oxidative dyes, from hair. In some embodiments, a composition according to the disclosure may be applied to the hair and left on the hair for a period of time ranging, for example, from about 1 minute to about 1 hour, from about 1 minute to about 45 minutes, from about 1 minute to about 30 minutes, from about 5 minutes to about 1 hour, from about 5 minutes to about 45 minutes, from about 5 minutes to about 30 minutes, etc. The hair may optionally be heated during the application period. The methods may further include removing the compositions from the hair, for example, by rinsing and / or washing the hair with shampoo. BRIEF DESCRIPTION OF THE FIGURES

[0015] [Fig. 1] Fig. 1 shows the breaking strength and the modulus of elasticity of untreated hair, hair that has been dyed, and hair that has been dyed and treated with a color-removing composition as disclosed or commercially available color-removing compositions.

[0016] [Fig.2] Fig.2 shows the breaking stress and the modulus of elasticity of untreated hair, hair that has been dyed, and hair that has been dyed and treated with a color-removing composition as disclosed, commercially available color-removing compositions, or a comparative color-removing composition. DETAILED DESCRIPTION

[0017] The disclosure relates to compositions and processes for removing color, such as color obtained through oxidative dyes, from hair. COMPOSITIONS

[0018] The compositions according to the disclosure include (a) at least one color-eliminating agent selected from thiosalicylic acid and / or its salts, (b) at least one solvent, and optionally at least one additional compound selected from clays, surfactants, fatty compounds, thickeners, organic acids, amino acids, organic amine compounds, or combinations of two or more of these. Color removal agents

[0019] The compositions as disclosed include at least one color-eliminating agent selected from thiosalicylic acid and / or its salts. Non-limiting examples of salts include sodium salts, ammonium salts, lithium salts, potassium salts, and calcium salts. The compositions as disclosed may optionally include one or more additional color-eliminating agents. For example, the compositions may optionally include at least one additional color-eliminating agent selected from cysteine ​​and / or its salts, homocysteine ​​and / or its salts, thiolactic acid and / or its salts, thioglycolic acid and / or its esters, borohydrides and / or their derivatives, phosphines and / or their salts, bisulfites and / or their salts, sulfites and / or their salts, or combinations of two or more of these.However, it is preferable that if such additional color-eliminating agents are thiol-based, the total amount of additional thiol-based color-eliminating agents not be sufficient to impart a foul odor to the compositions, for example, less than about 5%, less than about 4.5%, less than about 4%, less than about 3.5%, less than about 3%, less than about 2.5%, less than about 2%, less than about 1.5%, less than about 1%, less than about 0.5%, or less than about 0.1% by weight of the composition. In some embodiments, the compositions are free from, or substantially free from, color-eliminating agents other than acid. thiosalicylic acid and / or its salts, are free or substantially free of thiol-based color-removing agents other than thiosalicylic acid and / or its salts, or are free or substantially free of thiolactic acid and / or its salts.

[0020] In various embodiments, the total amount of color-eliminating agents can range from about 0.5% to about 20%, from about 1% to about 18%, from about 2% to about 15%, or from about 4% to about 12% by weight, relative to the total weight of the composition. For example, in various embodiments, the total quantity of color-removing agents can range from approximately 1% to approximately 20%, from approximately 1% to approximately 15%, from approximately 1% to approximately 14%, from approximately 1% to approximately 13%, from approximately 1% to approximately 12%, from approximately 1% to approximately 11%, from approximately 1% to approximately 10%, from approximately 1% to approximately 9%, from approximately 1% to approximately 8%, from approximately 1% to approximately 7%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%, from approximately 2% to approximately 20%, from approximately 2% to approximately 15%, from approximately 2% to approximately 14%, from approximately 2% to approximately 13%, from approximately 2% to approximately 12%, from approximately 2% to approximately 11%, from approximately 2% to approximately 10%, and from approximately 10% to approximately 10%. %, from approximately 2% to approximately 9%,from approximately 2% to approximately 8%, from approximately 2% to approximately 7%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 3% to approximately 20%, from approximately 3% to approximately 15%, from approximately 3% to approximately 14%, from approximately 3% to approximately 13%, from approximately 3% to approximately 12%, from approximately 3% to approximately 11%, from approximately 3% to approximately 10%, from approximately 3% to approximately 9%, from approximately 3% to approximately 8%, from approximately 3% to approximately 7%, from approximately 3% to approximately 6%, from approximately 3% to approximately 5%, from approximately 4% to approximately 20%, from approximately 4% to approximately 15%, from approximately 4% to approximately 14%, from approximately 4% to approximately 13%, from approximately 4% to approximately 12%, from approximately 4% to approximately 11%, from approximately 4% to approximately 10%, from approximately 4% to approximately 9%, from approximately 4% to approximately 8%, from approximately 4% to approximately 7%, from approximately 4% to approximately 6%, from approximately 4% to approximately 5%, from approximately 5% to approximately 20%, from approximately 5% to approximately 15%, from approximately 5% to approximately 14%, from approximately 5% to approximately 13%, from approximately 5% to approximately 12%from approximately 5% to approximately 11%, from approximately 5% to approximately 10%, from approximately 5% to approximately 9%, from approximately 5% to approximately 8%, from approximately 5% to approximately 7%, or from approximately 5% to approximately 6%, from approximately 6% to approximately 20%, from approximately 6% to approximately 15%, from approximately 6% to approximately 14%, from approximately 6% to approximately 13%, from approximately 6% to approximately 12%, from approximately 6% to approximately 11%, from approximately 6% to approximately 10%, from approximately 6% to approximately 9%, from approximately 6% to approximately 8%, from approximately 6% to approximately 7%, from approximately 7% to approximately 20%, from approximately 7% to approximately 15%, from approximately 7% to approximately 14%, from approximately 7% to approximately 13%, from approximately 7% to approximately 12% %, from about 7% to about 11%, from about 7% to about 10%, from about 7% to about 9%, from about 7% to about 8%, from about 8% to about 20%, from about 8% to about 15%, from about 8% to about 14%, from about 8% to about 13%, from about 8%, % to about 12%, from about 8% to about 11%, from about 8% to about 10%, from about 8% to about 9%, from about 9% to about 20%, from about 9% to about 15%, from about 9% to about 14%, from about 9% to about 13%, from about 9% to about 12%, from about 9% to about 11%, from about 9% to about 10%, from about 10% to about 20%, from about 10% to about 15%, from about 10% to about 14%, from about 10% to about 13%, from about 10% to about 12%, or from about 10% to about 11% by weight, relative to the total weight of the composition.For example, the total amount of color-removing agents may be about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, or about 15% by weight, relative to the total weight of the composition, including any range using any of the preceding values ​​as upper and lower limits.

[0021] By way of non-limiting examples, the composition may include thiosalicylic acid and / or its salts as color-removing agents, and the total amount of thiosalicylic acid and its salts may be at least about 1%, for example, may range from about 1% to about 20%, from about 1% to about 18%, from about 1% to about 15%, from about 1% to about 12%, from about 1% to about 10%, from about 1% to about 8%, from about 1% to about 6%, from about 1.5% to about 20%, from about 1.5% to about 18%, from about 1.5% to about 15%, from about 1.5% to about 12%, from about 1.5% to about 10%, from about 1.5% to about 8%, from about 1.5% to about 6%, from about 2% to about 20%, from about 2% to about 18%, from about 2% to about 15%, from about 2% to about 12%, from about 2% to about 10%, from about 2% to about 8%, from about 2% to about 6%, from about 2.5% to about 20%, from about 2.5% to about 18%, from about 2%5% to approximately 15%, from approximately 2.5% to approximately 12%, from approximately 2.5% to approximately 10%, from approximately 2.5% to approximately 8%, from approximately 2.5% to approximately 6%, from approximately 3% to approximately 20%, from approximately 3% to approximately 18%, from approximately 3% to approximately 15%, from approximately 3% to approximately 12%, from approximately 3% to approximately 10%, from approximately 3% to approximately 8%, from approximately 3% to approximately 6%, from approximately 3.5% to approximately 20%, from approximately 3.5% to approximately 18%, from approximately 3.5% to approximately 15%, from approximately 3.5% to approximately 12%, from approximately 3.5% to approximately 10%, from approximately 3.5% to approximately 8%, from approximately 3.5% to approximately 6%, from approximately 4% % to about 20%, from about 4% to about 18%, from about 4% to about 15%, from about 4% to about 12%, from about 4% to about 10%, from about 4% to about 8%, from about 4% to about 6%, from about 4.5% to about 20%, from about 4.5% to about 18%, from about 4.5% to about 15%, from about 4.5% to about 12%, from about 4.5% to about 10%, from about 4.5% to about 8%, or about 4%5% to approximately 6% by weight, relative to the total weight of the composition. For example, The composition may comprise a total amount of thiosalicylic acid and its salts of approximately 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, or approximately 10% by weight, relative to the total weight of the composition, or may be present within a range using any of the preceding values ​​as upper or lower limits. Optionally, the composition may comprise at least one additional color-removing agent in addition to thiosalicylic acid and / or its salts. Solvents

[0022] The compositions according to the disclosure comprise at least one solvent. The solvent may be chosen from water, non-aqueous solvents or combinations thereof.

[0023] In some embodiments, the solvent comprises, consists essentially of, or consists of water. The total amount of water may vary depending on the desired properties of the composition, for example, consistency, viscosity, etc.

[0024] In some embodiments, non-aqueous solvents may be used, for example, glycerin, C1.4 alcohols, fatty alcohols, fatty ethers, fatty esters, polyols, glycols, vegetable oils, mineral oils, liposomes, laminar lipid materials or combinations thereof. Other non-limiting examples of non-aqueous solvents include alkanediols such as glycerin, 1,2,6-hexanetriol, trimethylolpropane, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, dipropylene glycol, 2-butene-1,4-diol, 2-ethyl-1,3-hexanediol, 2-methyl-2,4-pentanediol, (caprylyl glycol), 1,2-hexanediol, 1,2-pentanediol, and 4-methyl-1,2-pentanediol; alkyl alcohols having 1 to 4 carbon atoms such as ethanol, methanol, butanol, propanol, and isopropanol;glycol ethers such as monomethyl ethylene glycol ether, monoethyl ethylene glycol ether, monobutyl ethylene glycol ether, ethylene glycol acetate monomethyl ether, monomethyl diethylene glycol ether, monoethyl diethylene glycol ether, mono-n-propyl diethylene glycol ether, mono-isopropyl ethylene glycol ether, mono-isopropyl diethylene glycol ether, mono-n-butyl ethylene glycol ether, mono-t-butyl ethylene glycol ether, mono-t-butyl diethylene glycol ether, 1-methyl-l-methoxybutanol, monomethyl propylene glycol ether, monoethyl propylene glycol ether, mono-t-butyl propylene glycol ether, mono-n-propyl propylene glycol ether, mono-isopropyl propylene glycol ether, monomethyl dipropylene glycol ether, monoethyl dipropylene glycol ether, mono-n-propyl dipropylene glycol ether and mono-iso-propyl dipropylene glycol ether; 2-pyrrolidone, N-methyl-2-pyrrolidone, l,3-dimethyl-2-; imidazolidinone, formamide, acetamide, dimethyl sulfoxide, sorbit, sorbitan, acetin, diacetinate, triacetin, sulfolane, or combinations thereof.

[0025] The total amount of solvents in the composition typically ranges from about 50% to about 98%, such as about 60% to about 98%, about 70% to about 98%, about 75% to about 98%, about 75% to about 95%, or about 80% to about 90% by weight, relative to the total weight of the composition. Organic acids

[0026] The compositions according to the disclosure optionally include at least one organic acid, for example selected from carboxylic acids, which includes, for example, α-hydroxy acids and / or keto acids. Salts of organic acids may also be selected and are expressly included unless otherwise stated. Derivatives of organic acids may also be used, for example, oxo or keto derivatives.

[0027] In various embodiments, useful organic acids include ascorbic acid, erythorbic acid, citric acid, maleic acid, succinic acid, aspartic acid, glutamic acid, lactic acid, malic acid, tartaric acid, glyceric acid, gluconic acid, glutaric acid, acetic acid, glycolic acid, oxalic acid, 2-ketobutyric acid, [3-hydroxypyruvic acid, cetomalonic acid, oxoacetic acid, 2-ketoglutaric acid, 2-keto-L-gulonic acid, 2-ketoglutaric acid dihydrate, their pyruvamide salts, or combinations thereof. In some embodiments, the composition comprises one or more organic acids selected from 2-oxoglutaric acid (ketoglutaric acid), glyoxylic acid, glycolic acid, maleic acid, citric acid, lactic acid, acetic acid, their salts, or combinations of two or more of these.

[0028] In some embodiments, the composition comprises one or more organic acids selected from citric acid, ascorbic acid, erythorbic acid, glutaric acid, their salts and / or derivatives. In some embodiments, the organic acids comprise, consist essentially of, or consist of citric acid, ascorbic acid, erythorbic acid, ketoglutaric acid and / or their salts.

[0029] In some embodiments, the compositions comprise at least one carboxylic acid. In some embodiments, the compositions comprise at least one keto acid. Without intending to develop a theory, it is thought that keto acids, which are acids containing two oxygen-containing functional groups, a carboxylic acid (-COOH) and a ketone group (>C=O), enhance the color-removing benefits of thiosalicylic acid.

[0030] If present, the total amount of organic acids and their salts can range from about 0.01% up to about 80%, such as up to about 70%, up to about 60%, up to about 50%, up to about 45%, up to about 40%, up to about 35%, up to about 30%, up to about 25%, up to about 20%, up to about 15%, up to about 10%, or up to about 5%, relative to the total weight of the composition.

[0031] For example, the compositions may comprise at least one carboxylic acid and the total amount of carboxylic acids may range from about 0.1% to about 30%, from about 0.1% to about 28%, from about 0.1% to about 25%, from about 0.1% to about 20%, from about 0.1% to about 15%, from about 0.1% to about 13%, from about 0.1% to about 10%, from about 0.1% to about 8%, from about 0.1% to about 6%, from about 0.1% to about 5%, from about 0.5% to about 30%, from about 0.5% to about 28%, from about 0.5% to about 25%, from about 0.5% to about 20%, from about 0.5% to about 15%, from about 0.5% to approximately 13%, from approximately 0.5% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 0.5% to approximately 6%, from approximately 0.5% to approximately 5%, from approximately 1% to approximately 30%, from approximately 1% to approximately 28%, from approximately 1% to approximately 25%, from approximately 1% to approximately 20%, from approximately 1% to approximately 15%, from approximately 1% to approximately 13%, from approximately 1% to approximately 10%from approximately 1% to approximately 8%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%, from approximately 1.5% to approximately 30%, from approximately 1.5% to approximately 28%, from approximately 1.5% to approximately 25%, from approximately 1.5% to approximately 20%, from approximately 1.5% to approximately 15%, from approximately 1.5% to approximately 13%, from approximately 1.5% to approximately 10%, from approximately 1.5% to approximately 8%, from approximately 1.5% to approximately 6%, from approximately 1.5% to approximately 5%, from approximately 2% to approximately 30%, from approximately 2% to approximately 28%, from approximately 2% to approximately 25%, from approximately 2% to approximately 20%, from approximately 2% to approximately 15%, from approximately 2% to approximately 13%, from approximately 2% to approximately 10%, from approximately 2% to approximately 8%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 3% to approximately 30%, from approximately 3% to approximately 28%, from approximately 3% to approximately 25%, from approximately 3% to approximately 20%, from approximately 3% to approximately 15%, from approximately 3% to approximately 13%, from approximately 3% to approximately 10%, from approximately 3% to approximately 8%, from approximately 3% to approximately 6%, from approximately 3% to approximately 5%from approximately 4% to approximately 30%, from approximately 4% to approximately 28%, from approximately 4% to approximately 25%, from approximately 4% to approximately 20%, from approximately 4% to approximately 15%, from approximately 4% to approximately 13%, from approximately 4% to approximately 10%, from approximately 4% to approximately 8%, from approximately 5% to approximately 30%, from approximately 5% to approximately 28%, from approximately 5% to approximately 25%, from approximately 5% to approximately 20%, from approximately 5% to approximately 15%, from approximately 5% to approximately 13%, from approximately 5% to approximately 10%, from approximately 5% to approximately 8%, from approximately 6% to approximately 30%, from approximately 6% to approximately 28%, from approximately 6% to approximately 25%, from approximately 6% to approximately 20%, from approximately 6% to approximately 15%, from approximately 6% to , approximately 13%, from approximately 6% to approximately 10%, from approximately 6% to approximately 8%, from approximately 8% to approximately 30%, from approximately 8% to approximately 28%, from approximately 8% to approximately 25%, from approximately 8% to approximately 20%, from approximately 8% to approximately 15%, from approximately 8% to approximately 13%, from approximately 10% to approximately 30%, from approximately 10% to approximately 28%, from approximately 10% to approximately 25%, from approximately 10% to approximately 20%, from approximately 10% to approximately 15%, from approximately 10% to approximately 13%, from approximately 12% to approximately 30%, from approximately 12% to approximately 28%, from approximately 12% to approximately 25%, from approximately 12% to approximately 20%, from approximately 12% to approximately 15%, or of about 12% to about 13% by weight, relative to the total weight of the composition.In some embodiments, the total amount of carboxylic acids may be about 1%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5%, about 5.5%, about 6%, about 6.5%, about 7%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, about 10%, about 11%, about 12%, about 13%, about 14%. approximately 15%, approximately 16%, approximately 17%, approximately 18%, approximately 19% approximately 20%, approximately 21%, approximately 22%, approximately 23%, approximately 24%, or approximately 25% by weight, relative to the total weight of the composition, including all ranges and subranges using any previous values ​​as upper and lower limits.

[0032] In other embodiments, the compositions comprise at least one keto acid, and the total amount of keto acids ranges from about 0.01% up to about 20%, up to about 15%, up to about 13%, up to about 10%, up to about 9%, up to about 8%, up to about 7%, up to about 6%, or up to about 5% by weight, relative to the total weight of the composition. For example, the total amount of ketoacids can range from about 0.1% to about 20%, from about 0.1% to about 15%, from about 0.1% to about 13%, from about 0.1% to about 10%, from about 0.1% to about 8%, from about 0.5% to about 20%, from about 0.5% to about 15%, from about 0.5% to about 13%, from about 0.5% to about 10%, from about 0.5% to about 8%, from about 1% to about 20%, from about 1% to about 15%, from about 1% to about 13%, from about 1% to about 10%, from about 1% to about 8%, from about 1.5% to about 20%, from about 1.5% to about 15%,from approximately 1.5% to approximately 13%, from approximately 1.5% to approximately 10%, from approximately 1.5% to approximately 8%, from approximately 2% to approximately 20%, from approximately 2% to approximately 15%, from approximately 2% to approximately 13%, from approximately 2% to approximately 10%, from approximately 2% to approximately 8%, from approximately 3% to approximately 20%, from approximately 3% to approximately 15%, from approximately 3% to approximately 13%, from approximately 3% to approximately 10%, from approximately 3% to approximately 8%, from approximately 4% to approximately 20%, from about 5% to about 15%, from about 5% to about 13%, from about 5% to about 10%, from about 5% to about 8%, from about 6% to about 20%, from about 6% to about 15%, from about 6% to about 13%, from about 6% to about 10%, from about 6% to about 8%, from about 8% to about 20%, from about 8% to about 15%, from about 8% to about 13%, from about 8% to about 12%, from about 8% to about 11%, from about 9% to about 20%, from about 9% to about 15%, from about 9% to about 13%, from about 9% to about 12%, or from about 9% to about 11% by weight, relative to the total weight of the composition.In some embodiments, the total amount of ketoacids may be about 5%, about 5.5%, about 6%, about 6.5%, about 7%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, about 10%, about 10.5%, about 11%, about 11.5%, about 12%, about 12.5%, about 13%, about 13.5%, about 14%, about 14.5%, or about 15% by weight, relative to the total weight of the composition, including all ranges and subranges using any of the preceding values ​​as upper and lower limits.

[0033] In some embodiments, it may be advantageous to include at least one keto acid in the composition in an amount relative to the thiosalicylic acid to maximize the color-removing benefits. Thus, in various embodiments, the compositions include at least one keto acid where the weight ratio of the total amounts of thiosalicylic acid to keto acid(s) ranges from approximately 1:0.5 to 1:10. In other embodiments, it may be advantageous for the weight ratio of the total amounts of thiosalicylic acid to keto acid(s) to be equal to or less than 1.For example, the weight ratio between the total amounts of thiosalicylic acid:keto acid(s) can range from about 1:1 to about 1:10, such as from about 1:1 to about 1:8, from about 1:1 to about 1:6, from about 1:1 to about 1:5, from about 1:1 to about 1:4, from about 1:1 to about 1:3, from about 1:1 to about 1:2, from about 1:1 to about 1:1.5, from about 1:1.1 to about 1:10, from about 1:1.1 to about 1:8, from about 1:1.1 to about 1:6, from about 1:1.1 to about 1:5, from about 1:1.1 to about 1:4, from about 1:1.1 to about 1:3, from about 1:1.1 to about 1:2, or from about 1:1.1 to about 1:1.5.For example, the weight ratio between the total amounts of thiosalicylic acid:keto acid(s) may be about 0.1, about 0.2, about 0.3, about 0.4, about 0.5, about 0.6, about 0.7, about 0.8, about 0.9, about 1, about 1.1, about 1.2, about 1.3, about 1.4, or about 1.5, including all ranges and subranges using any of the preceding values ​​as upper and lower bounds. Surfactants

[0034] The compositions according to the disclosure optionally include at least one surfactant, which may be selected in various embodiments from among the surfactants Anionic, nonionic, amphoteric, and / or cationic surfactants. For example, compositions may include one or more anionic surfactants, one or more nonionic surfactants, one or more amphoteric surfactants, one or more cationic surfactants, or compositions may include mixtures of surfactants having the same or different ionicities. Surfactant salts are included, whether expressly mentioned or not, unless otherwise stated. Anionic surfactants

[0035] In at least some embodiments, the compositions comprise at least one anionic surfactant. The term "anionic surfactant" refers to a surfactant comprising, as ionic or ionizable groups, only anionic groups. A species is said to be "anionic" when it carries at least one permanent negative charge or when it can be ionized into a negatively charged species under the conditions of use of the composition (for example, the medium or pH) and when it does not contain any cationic charge. These anionic groups may be selected from, for example, the groups .—CO2H, —CO2-, —so3h, —so3-, —oso3h, —oso3-, —h2PO3, —hPO3-, —PO32-, —h2PO2, =HPO2, —HPO2-, =PO2-, =POH and =PO-.

[0036] Anionic surfactants can be sulfate, sulfonate and / or carboxylic (or carboxylate) surfactants, or mixtures thereof.

[0037] Anionic sulfate surfactants comprise at least one sulfate group (-OSO3H or -OSO3) but generally do not comprise a carboxylate or sulfonate group. In some embodiments, the anionic sulfate surfactants used are free of a carboxylate or sulfonate group.

[0038] Non-limiting examples of anionic sulfate surfactants include alkylsulfates, alkylethersulfates, alkylamidoethersulfates, alkylarylpolyethersulfates, monoglyceridesulfates; and salts of these compounds; the alkyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds being optionally polyoxyalkylated, for example polyoxyethylated, and optionally comprising from 1 to 50 ethylene oxide motifs, such as from 2 to 10 ethylene oxide motifs.

[0039] Sulfonate anionic surfactants comprise at least one sulfonate function (-SO3H or -SO3-) and may optionally also comprise one or more sulfate functions, but preferably do not comprise carboxylate functions.

[0040] Non-limiting examples of anionic sulfonate surfactants include alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, α- olefinsulfonates, paraffin sulfonates, alkylsulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkylsulfoacetates, N-acyltaurates, acylisethionates; alkylsulfolaurates; and also the salts of these compounds; the alkyl groups of these compounds comprising from 6 to 30 carbon atoms, for example from 12 to 28, such as from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds being optionally polyoxyalkylated, preferably polyoxyethylated, and optionally comprising from 1 to 50 ethylene oxide motifs and even better from 2 to 10 ethylene oxide motifs.

[0041] Carboxylate anionic surfactants comprise at least one carboxylic or carboxylate function (-COOH or -COO ) and may optionally also comprise one or more sulfate and / or sulfonate functions.

[0042] Non-limiting examples of anionic carboxylate surfactants include acylglycinates, acyllactylates, acylsarcosinates, acylglutamates, alkyl-D-galactosideuronic acids, alkyl ether carboxylic acids, alkyl(C6-30 aryl) ether carboxylic acids, alkylamido ether carboxylic acids; and also the salts of these compounds; the alkyl and / or acyl groups of these compounds comprising from 6 to 30 carbon atoms, for example from 12 to 28, such as from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group; these compounds being optionally polyoxyalkylated, preferably polyoxyethylated, and optionally comprising from 1 to 50 ethylene oxide motifs and better still from 2 to 10 ethylene oxide motifs.

[0043] When the anionic surfactant is in salt form, the salt can be chosen from alkali metal salts, such as sodium or potassium salts, ammonium salts, amine salts and in particular amino alcohol salts, and alkaline earth metal salts, such as magnesium salt.

[0044] Examples of amino alcohol salts may include, but are not limited to, monoethanolamine, diethanolamine and triethanolamine salts, monoisopropanolamine, diisopropanolamine or triisopropanolamine salts, 2-amino-2-methyl-l-propanol salts, 2-amino-2-methyl-l,3-propanediol salts and tris(hydroxymethyl)aminomethane salts.

[0045] In some embodiments, alkali metal or alkaline earth metal salts and in particular sodium or magnesium salts may be chosen, in particular in the form of alkali metal, ammonium, amino alcohol and alkaline earth metal salts, or a mixture of these compounds.

[0046] In non-limiting exemplary embodiments, the anionic surfactant may be chosen from sodium laureth sulfate, ammonium laureth sulfate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, the diammonium laurylsulfosuccinate, sodium diethylhexylsulfosuccinate, sodium oleylsuccinate, sodium lauroyl methylisethionate, sodium laurylisethionate, sodium cocoylisethionate, sodium laureth-5 carboxylate, lauryl ethercarboxylic acid, ammonium lauryl sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, sodium lauryl sulfate, potassium lauryl sulfate, potassium laureth sulfate, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, monoethanolamine cocoyl sulfate, sodium tridecylbenzenesulfonate,sodium dodecylbenzenesulfonate, a sodium olefin sulfonate in Ci4_i6, sodium laurylsarcosinate, sodium lauroyl sarcosinate, stearoylsarcosine, laurylsarcosine, cocoylsarcosine, sodium methylcocoyltaurate, sodium methyllauroyltaurate, sodium lauroylglutamate, sodium cocoylglutamate, disodium cocoylglutamate, potassium myristoylglutamate, TEA cocoylglutamate, sodium cocoylglycinate, potassium cocoylglycinate, sodium cocoyllaninate, TEA cocoyllaninate, or a combination of two or more of these. For example, compositions may include at least one anionic surfactant selected from sodium laureth sulfate, sodium lauryl sulfate, sodium lauroyl sulfate, sodium lauroyl methyl isethionate, or a combination of two or more of these.

[0047] Where applicable, the total amount of anionic surfactants may range from approximately 0.01% to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 8%, up to approximately 5%, up to approximately 3.5%, or up to approximately 2% by weight, relative to the total weight of the composition. For example, the total amount of anionic surfactants may range from approximately 0.01% to approximately 12%, from approximately 0.1% to approximately 10%, from approximately 0.5% to approximately 8%, or from approximately 1% to approximately 6% by weight, relative to the total weight of the composition.In at least some embodiments, the compositions comprise at least one anionic surfactant, and have a total amount of anionic surfactants ranging from about 0.5% to about 10%, from about 0.5% to about 8%, from about 0.5% to about 6%, from about 0.5% to about 5%, from about 0.5% to about 4%, from about 0.5% to about 3%, from about 0.75% to about 10%, from about 0.75% to about 8%, from about 0.75% to about 6%, from about 0.75% to about 5%, from about 0.75% to about 4%, from about 0.75% to about 3%, from about 1% to about 10%, from about 1% to about 8%, from about 1% to about 6%, from about 1% to about 5%, approximately . 1% to about 4%, from about 1% to about 3%, from about 1.25% to about 10%, from about 1.25% to about 8%, from about 1.25% to about 6%, from about 1.25% to about 5%, from about 1.25% to about 4%, from about 1.25% to about 3%, from about 1.5% to about 10%, from about 1.5% to about 8%, from about 1.5% to about 6%, from about 1.5% to about 5%, from about 1.5% to about 4%, or from about 1.5% to about 3%, by weight relative to the total weight of the composition.In various embodiments, the total amount of anionic surfactant may be about 0.25%, about 0.5%, about 0.75%, about 1%, about 1.25%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5%, about 5.5%, about 6%, about 6.5%, about 7%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, or about 10%, by weight, relative to the total weight of the composition, or it may be present in any range using any of the preceding values ​​as lower or upper limits. Amphoteric surfactants

[0048] In at least some embodiments, the compositions comprise at least one amphoteric surfactant (also called zwitterionic surfactants), although in at least some embodiments, the compositions are free or substantially free of amphoteric surfactants. Non-limiting examples of useful amphoteric surfactants include secondary and tertiary aliphatic amine derivatives where the aliphatic radical may be a straight or branched chain and one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group such as carboxy, sulfonate, sulfate, phosphate, or phosphonate. Examples of amphoteric surfactants include sodium cocaminopropionate, sodium cocaminodipropionate, sodium cocoamphoacetate, sodium cocoamphohydroxypropylsulfonate, sodium cocoamphopropionate, sodium maismopropionate, sodium lauraminopropionate, sodium lauroamphoacetate,lauroamphohydroxypropylsulfonate de sodium, lauroamphopropionate de sodium, maïsamphopropionate de sodium, lauriminodipropionate de sodium, cocaminopropionate d'ammonium, cocaminodipropionate d'ammonium, cocoamphoacétate d'ammonium, cocoamphohydroxypropylsulfonate d'ammonium, cocoamphopropionate d'ammonium, maïsamphopropionate d'ammonium, lauraminopropionate d'ammonium, lauroamphoacétate d'ammonium, lauroamphohydroxypropylsulfonate d'ammonium, lauroamphopropionate d'ammonium, maïsamphopropionate d'ammonium, lauriminodipropionate d'ammonium, cocaminopropionate de triéthanolamine, cocaminodipropionate de triéthanolamine, cocoamphoacétate de triéthanolamine, cocoamphohydroxypropylsulfonate de triéthanolamine, , triethanolamine cocoamphopropionate, triethanolamine mausamphopropionate, triethanolamine lauraminopropionate, triethanolamine lauroamphoacetate, triethanolamine lauroamphohydroxypropylsulfonate, triethanolamine lauroamphopropionate, triethanolamine mausamphopropionate, triethanolamine lauriminodipropionate, cocoamphodipropionic acid, disodium caproamphoadipropionate, disodium caproamphoadipropionate, disodium capryloamphodiacetate, disodium capryloamphodipriopionate, disodium cocoamphocarboxyethylhydroxypropylsulfonate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, disodium dicarboxyethylcocopropylenediamine, disodium laureth-5 carboxyamphodiacetate, disodium lauriminodipropionate, disodium lauroamphodiacetate, disodium lauroamphodipropionate, disodium oleoamphodipropionate PPG-2-isodecethyl-7 disodium carboxyamphodiacetate, lauraminopropionic acid, lauroamphodipropionic acid,lauryl aminopropylglycine and lauryl diethylenediaminoglycine, as well as combinations of two or more of these.

[0049] Betaines can also be used. For example, coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl alphacarboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, cetyl dimethyl betaine, lauryl bis-(2-hydroxyethyl) carboxymethyl betaine, stearyl bis-(2-hydroxypropyl) carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl bis-(2-hydroxypropyl) alpha-carboxyethyl betaine, coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis-(2-hydroxyethyl) sulfopropyl betaine, oleyl betaine or cocamidopropyl betaine, or combinations of two or more of these may be chosen.

[0050] Where applicable, the total amount of amphoteric surfactants may range from approximately 0.01% to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 8%, up to approximately 5%, up to approximately 3.5%, or up to approximately 2% by weight, relative to the total weight of the composition. For example, the total amount of amphoteric surfactants may range from approximately 0.01% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.5% to approximately 6%, or from approximately 1% to approximately 4% by weight, relative to the total weight of the composition.In at least some embodiments, the compositions comprise at least one amphoteric surfactant, and have a total amount of amphoteric or zwitterionic surfactants ranging from about 0.25% to about 5%, such as about 0.5% to about 4%, about 0.75% to about 3%, or about 1% to about 2%, or may be about 0.25%, about 0.5%, about 0.75%, about 1%, about 1.25%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5%, about 5.5%, about 6%, about 6.5%, about 7%. of approximately 7.5%, approximately 8%, approximately 8.5%, approximately 9%, approximately 9.5%, or approximately 10% by weight, relative to the total weight of the composition, including any range using any of the preceding values ​​as upper and lower limits. In at least some other embodiments, the compositions are free or substantially free of amphoteric surfactants. Non-ionic surfactants

[0051] In at least some embodiments, the compositions comprise at least one nonionic surfactant, although in at least some embodiments, the compositions are free or essentially free of nonionic surfactants. The nonionic surfactants may be selected from alcohols, α-diols and alkylphenols (in (C1-C20)), these compounds being polyethoxylated and / or polypropoxylated and / or polyglycerolated, the number of ethylene oxide and / or propylene oxide groups possibly ranging from 1 to 100, and the number of glycerol groups possibly ranging from 2 to 30, or alternatively compounds comprising at least one fatty chain comprising from 8 to 30 carbon atoms and in particular from 16 to 30 carbon atoms.For example, nonionic surfactants can be selected from monooxyalkylated or polyoxyalkylated (C8-C24)alkylphenols, monooxyalkylated or polyoxyalkylated C8-C30 alcohols, saturated or unsaturated, linear or branched, monooxyalkylated or polyoxyalkylated C8-C30 amides, saturated or unsaturated, linear or branched, esters of saturated or unsaturated C8-C30 acids, linear or branched, and polyalkylene glycols, monooxyalkylated or polyoxyalkylated esters of saturated or unsaturated C8-C30 acids, linear or branched, and sorbitol, saturated or unsaturated monooxyalkylated or polyoxyalkylated vegetable oils, ethylene oxide and / or propylene oxide condensates, or their derivatives. combinations.

[0052] By way of example only, ethylene oxide adducts with lauryl alcohol, for example those containing 9 to 50 oxyethylene units or 10 to 12 oxyethylene units (Laureth-10 to Laureth-12); ethylene oxide adducts with behenyl alcohol, for example those containing 9 to 50 oxyethylene units (Beheneth-9 to Beheneth-50); ethylene oxide adducts with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), for example those containing 10 to 30 oxyethylene units (Ceteareth-10 to Ceteareth-30); ethylene oxide adducts with cetyl alcohol, for example those containing 10 to 30 oxyethylene motifs (Ceteth-10 to Ceteth-30); ethylene oxide adducts with stearyl alcohol, for example those containing 10 to 30 oxyethylene motifs (Steareth-10 to Steareth-30); ethylene oxide adducts with isostearyl alcohol, for example those containing 10 to 50 oxyethylene motifs (Isosteareth-10 to Isosteareth-50);alcohols in the C8-C40 range, for example; enC8-C3o, monoglycerol or polyglycerol, such as lauryl alcohol containing 4 moles of glycerol (Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 moles of glycerol, oleyl alcohol containing 4 moles of glycerol (Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 moles of glycerol (Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 moles of glycerol, cetearyl alcohol containing 6 moles of glycerol, oleocetyl alcohol containing 6 moles of glycerol, or octadecanol containing 6 moles of glycerol;polyoxyethylenated fatty esters such as ethylene oxide adducts with lauric acid, palmitic acid, stearic acid or behenic acid esters, and mixtures thereof, for example those containing 9 to 100 oxyethylene units such as PEG-9 to PEG-50 laurate, PEG-9 to PEG-50 palmitate, PEG-9 to PEG-50 stearate, PEG-9 to PEG-50 palmitostearate, PEG-9 to PEG-50 behenate, polyethylene glycol 100 OE monostearate (PEG-100 stearate); glyceryl stearate (glyceryl mono-, di- and / or tri-stearate); glyceryl ricinoleate; sorbitan palmitate; Sorbitan isostearate; sorbitan stearate; sorbitan palmitate; sorbitan trioleate; alkylglucose sesquistearates such as methylglucose sesquistearate; alkylglucose palmitates such as methylglucose or ethylglucose palmitate, etc., or combinations of two or more of these may be chosen.

[0053] Where applicable, the total amount of nonionic surfactants may range from approximately 0.01% to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 8%, up to approximately 5%, up to approximately 3.5%, or up to approximately 2% by weight, relative to the total weight of the composition. For example, the total amount of nonionic surfactants may range from approximately 0.01% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.5% to approximately 6%, or from approximately 1% to approximately 4% by weight, relative to the total weight of the composition.In at least some embodiments, the compositions comprise at least one nonionic surfactant, and have a total amount of nonionic surfactants ranging from about 0.25% to about 5%, such as from about 0.5% to about 4%, from about 0.75% to about 3%, or from about 1% to about 2%, or may be about 0.25%, about 0.5%, about 0.75%, about 1%, about 1.25%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5.5%, about 6%, about 6.5%, about 7.5%, about 7.5%, about 8%, about 8.5%, about 9%. of approximately 9.5% or approximately 10% by weight, relative to the total weight of the composition, including any range using any of the preceding values ​​as upper and lower limits. In at least some embodiments, the compositions are free or substantially free of non-ionic surfactants.

[0054] Cationic surfactants

[0055] In at least some embodiments, the compositions comprise at least one cationic surfactant, although in at least some embodiments, the compositions are free or substantially free of cationic surfactants. Non-limiting examples of cationic surfactants include amine-based or quaternary ammonium-based cationic compounds.

[0056] For example, cationic surfactants can be chosen from alkylpyridinium salts, imidazoline ammonium salts, diquaterary ammonium salts and ammonium salts containing at least one ester function.

[0057] Surfactants may be, for example, salts (chloride or methyl sulfate) of diacyloxyethyldimethylammonium, diacyloxyethylhydroxyethylmethylammonium, monoacyloxyethyldihydroxyethylmethylammonium, triacyloxyethylmethylammonium, or monoacyloxyethylhydroxyethyldimethylammonium, and mixtures thereof. The acyl radicals preferably contain 14 to 18 carbon atoms and are most particularly derived from a vegetable oil such as palm oil or sunflower oil. When the compound contains several acyl radicals, these radicals may be identical or different.

[0058] Other suitable cationic surfactants are esterquats, which are quaternary ammonium compounds having fatty acid chains containing ester bonds, such as, for example, dibehenoylethyldimonium chloride, dipalmitoylethyldimonium chloride, distearoylethyldimonium chloride, disuifoyl PG-dimonium chloride, dipalmitoylethylhydroxyethylmonium methosulfate, distearoylethylhydroxyethylmonium methosulfate, or mixtures thereof.

[0059] Additional non-limiting examples of useful cationic surfactants include brassicamidopropyldimethylamine, behentrimonium chloride, cetrimonium chloride, behenalconium chloride, benzethonium chloride, cetylpyridinium chloride, behentrimonium chloride, lauralconium chloride, cetalconium chloride, cetrimonium bromide, cetylamine hydrofluoride, chlorallylmethenamine chloride (Quatemium-15), distearyldimonium chloride (Quaternium-5), dodecyldimethylethylbenzylammonium chloride (Quatemium-14), Quatemium-22, Quaternium-26, Quatemium-18 hectorite, dimethylaminoethyl chloride hydrochloride, cysteine ​​hydrochloride, and diethanolammonium phosphate (POE). (10) oleylether, diethanolammonium phosphate POE (3) oleylether, alconium tallow chloride, dimethyldioctadecylammonium bentonite, stearalconium chloride, domiphene bromide,denatonium benzoate, myristalconium chloride, laurtrimonium chloride, ethylenediamine dihydrochloride, guanidine hydrochloride, pyridoxine HCl, iofetamine hydrochloride, meglumine hydrochloride, methylbenzethonium chloride, myrtrimonium bromide, chloride, oleyltrimonium, polyquatemium-1, procaine hydrochloride, cocobetaine, stearalconium bentonite, stearalconium hectorite, stearyltrihydroxyethylpropylenediamine dihydrofluoride, suiftrimonium chloride, hexadecyltrimethylammonium bromide, stearamidopropyldimethylamine, or combinations thereof.

[0060] Where applicable, the total amount of cationic surfactants may range from approximately 0.01% to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 8%, up to approximately 5%, up to approximately 3.5%, or up to approximately 2% by weight, relative to the total weight of the composition. For example, the total amount of cationic surfactants may range from approximately 0.01% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.5% to approximately 6%, or from approximately 1% to approximately 4% by weight, relative to the total weight of the composition.In at least some embodiments, the compositions comprise at least one cationic surfactant, and have a total amount of cationic surfactants ranging from about 0.25% to about 5%, such as from about 0.5% to about 4%, from about 0.75% to about 3%, or from about 1% to about 2%, or may be about 0.25%, about 0.5%, about 0.75%, about 1%, about 1.25%, about 1.5%, about 2%, about 2.5%, about 3%, about 3.5%, about 4%, about 4.5%, about 5.5%, about 6%, about 6.5%, about 7.5%, about 7.5%, about 8%, about 8.5%, about 9%, about 9.5%, or about 10% by weight, relative to the total weight of the composition, including any range using any of the preceding values ​​as upper and lower limits. In some embodiments, however, the compositions are free or substantially free of cationic surfactants. Clay compounds

[0061] The compositions according to the disclosure optionally include at least one clay compound, although in at least some embodiments the compositions are free or substantially free of clay compounds. In some embodiments, the compositions include more than one clay compound, for example, at least two clay compounds, etc. Without being intended to be limiting, it is believed that the addition of one or more clay compounds may help prevent the reoxidation of the dyes, thus making color removal durable.

[0062] By way of non-limiting example, the clay compound may be selected from kaolinite (also referred to interchangeably as kaolin), bentonite, magnesium aluminum silicate, smectite, hectorite, vermiculite, illite, chorite, halloysite, palygorskite, sepiolite, sesquioxide, imogolite, allophane, or combinations of two or more of these. For example, in one embodiment, kaolin is selected. In another embodiment, bentonite is selected. In various embodiments of In production, the clay compound comprises, consists essentially of, or consists of smectite, hectorite, kaolin, bentonite, magnesium aluminum silicate, or a combination of two or more of these.

[0063] Where applicable, the total quantity of clay may vary, but may range from about 0.1% to about 15%, from about 0.5% to about 12%, from about 1% to about 8%, or from about 2% to about 10% by weight, relative to the total weight of the composition. For example, the total amount of clay can range from approximately 1% to approximately 12%, from approximately 1% to approximately 11%, from approximately 1% to approximately 10%, from approximately 1% to approximately 9%, from approximately 1% to approximately 8%, from approximately 1% to approximately 7%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%, from approximately 1% to approximately 4%, from approximately 1% to approximately 3%, from approximately 1% to approximately 2%, from approximately 2% to approximately 12%, from approximately 2% to approximately 11%, from approximately 2% to approximately 10%, from approximately 2% to approximately 9%, from approximately 2% to approximately 8%, from approximately 2% to approximately 7%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 2% to approximately 4%, from approximately 2% to approximately 3%, from approximately 3% to approximately 12%, from approximately 3% to approximately 11%,from about 3% to about 10%, from about 3% to about 9%, from about 3% to about 8%, from about 3% to about 7%, from about 3% to about 6%, from about 3% to about 5%, from about 3% to about 4%, from about 4% to about 12%, from about 4% to about 11%, from about 4% to about 10%, from about 4% to about 9%, from about 4% to about 8%, from about 4% to about 7%, from about 4% to about 6%, from about 4% to about 5%, from about 5% to about 12%, from about 5% to about 11%, from about 5% to about 10%, from about 5% to about 9%, from about 5% to about 8%, from about 5% to about 7%, from about 5% to approximately 6%, from approximately 6% to approximately 12%, from approximately 6% to approximately 11%, from approximately 6% to approximately 10%, from approximately 6% to approximately 9%, from approximately 6% to approximately 8%, from approximately 6% to approximately 7%, from approximately 7% to approximately 12%, from approximately 7% to approximately 11%, from approximately 7% to approximately 10%, from approximately 7% to approximately 9%, from approximately 7% to approximately 8%, from approximately 8% to approximately 12%from approximately 8% to approximately 11%, from approximately 8% to approximately 10%, from approximately 8% to approximately 9%, from approximately 9% to approximately 12%, from approximately 9% to approximately 11%, from approximately 9% to approximately 10%, from approximately 10% to approximately 12%, or from approximately 10% to approximately 11% by weight, relative to the total weight of the composition. For example, the total amount of clays may be approximately 1%, approximately 2%, approximately 3%, approximately 4%, approximately 5%, approximately 6%, approximately 7%, approximately 8%, approximately 9%, approximately 10%, approximately 11%, or approximately 12% by weight, relative to the total weight of the composition, including any range using any of the preceding values ​​as upper and lower limits.

[0064] By way of non-limiting example, the clay compound may comprise, consist essentially of, or consist of bentonite, kaolin, smectite, hectorite or a combination of two or more of these, and the total amount of clays may be about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11% or about 12% by weight, relative to the total weight of the composition, or it may be present in a range using any of the preceding values ​​as upper or lower limits. Fatty compounds

[0065] Optionally, the compositions according to the disclosure may include at least one fatty compound, although in at least some embodiments, the compositions are free or substantially free of fatty compounds. In some embodiments, the at least one fatty compound may be selected from lower alkanes, fatty alcohols, fatty acids, fatty acid esters, fatty alcohol esters, oils such as mineral, vegetable, animal, silicone and non-silicone oils, silicone and non-silicone waxes, or combinations of two or more of these. In some embodiments, the compositions include at least one fatty compound of natural origin. In some embodiments, the compositions are free or substantially free of fatty compounds that are not of natural origin.In some embodiments, the compositions are free or essentially free of silicone fatty compounds.

[0066] Where appropriate, silicone oils may, for example, be selected from polydimethylsiloxanes (PDMS), polydimethylsiloxanes comprising alkyl or alkoxy groups which are pendant and / or at the end of the silicone chain, which groups each contain from 2 to 24 carbon atoms, or phenylsilicones, such as phenyltrimethicones, phenyldimethicones, phenyl(trimethylsiloxy)diphenylsiloxanes, diphenyldimethicones, diphenyl(methyl-diphenyl)trisiloxanes or (2-phenylethyl)trimethylsiloxysilicates. Non-limiting examples of silicone oils include dimethicone, amodimethicone, cyclomethicone, polysilicone-11, phenyl trimethicone, trimethylsilylamodimethicone and stearoxytrimethylsilane.For example, the composition may include at least one silicone selected from amodimethicone, PEG-7 dimethicone, PEG-8 dimethicone, PEG-9 dimethicone, PEG-10 dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG-17 dimethicone, PEG / PPG-3 / 10 dimethicone, PEG / PPG-4 / 12 dimethicone, PEG / PPG-17 / 18 dimethicone, cetyl PEG / PPG-10 / 1 dimethicone, PEG-8 dimethicone benzoate, PEG-7 dimethicone phosphate, PEG-8 dimethicone phosphate, PEG-10 dimethicone phosphate, or a combination of two or more of these.

[0067] In certain embodiments, the compositions include a silicone oil component which comprises, consists essentially of, or consists of Dimethicone, amodimethicone, or a combination thereof. In some embodiments, the compositions are free or substantially free of silicone oils and / or silicone waxes.

[0068] In certain embodiments, the compositions according to the disclosure may include at least one fatty compound selected from fatty alcohols. Here, "fatty alcohol" may refer to any alcohol with a carbon chain of C5 or higher, such as, for example, C8 or higher, C10 or higher, or C12 or higher, such as from 6 to 30 carbon atoms or from 8 to 30 carbon atoms. Fatty alcohols may be alkoxylated or non-alkoxylated, saturated or unsaturated, and linear or branched. Non-limiting examples of fatty alcohols include arachidyl alcohol, behenyl alcohol, caprylic alcohol, cetearyl alcohol, cetyl alcohol, coconut alcohol, decyl alcohol, hydrogenated tallow alcohol, jojoba alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, palm alcohol, palm kernel alcohol, stearyl alcohol, tallow alcohol, tridecyl alcohol, or combinations of two or more of these.In some preferred embodiments, the compositions include a fatty alcohol component which comprises, consists essentially of, or consists of cetyl alcohol, stearyl alcohol, cetearyl alcohol, or combinations thereof.

[0069] The useful, but not limiting, fatty acids may be straight-chain or branched-chain and / or may be saturated or unsaturated. Non-limiting examples of fatty acids include diacids, triacids, and other multiple acids, as well as salts of these fatty acids. For example, the fatty acid may optionally include, or be selected from, lauric acid, palmitic acid, stearic acid, behenic acid, arachidonic acid, oleic acid, isostearic acid, sebacic acid, or combinations thereof.

[0070] In some embodiments, fatty acid esters or fatty alcohol esters may be chosen. Esters of saturated or unsaturated, linear or branched C1-C26 aliphatic mono- or polyacids and of saturated or unsaturated, linear or branched C1-C26 aliphatic mono- or polyalcohols, the total carbon number of the esters being more particularly greater than or equal to 10, may be used, for example. In other embodiments, esters of C4-C22 dicarboxylic or tricarboxylic acids and C1-C22 alcohols and esters of mono-, di-, or tricarboxylic acids and C2-C26 di-, tri-, tetra-, or pentahydroxyalcohols may also be used.By way of non-limiting examples, isostearyl lactate, lauryl lactate, linoleyl lactate, oleyl lactate, (iso)stearyl octanoate, isocetyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, isocetyl isostearate, isocetyl laurate, isocetyl stearate, isodecyl octanoate, isodecyl oleate, isononyl isononanoate, isostearyl palmitate, methylacetyl ricinoleate, myristyle stearate, octyl isononanoate, . 2-Ethylhexyl isononanoate, octyl palmitate, octyl pelargonate, octyl stearate, octyldodecyl erucate, oleyl erucate, ethyl and isopropyl palmitates, 2-Ethylhexyl palmitate, 2-Octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl, myristyle or stearyl myristate, hexyl stearate, butyl stearate, isobutyl stearate, dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, diisostearyl adipate, dioctyl maleate, glyceryl undecylenate, octyldodecyl stearoylstearate, pentaerythrityl monoricinoleate, pentaerythrityl tetraisononanoate, pentaerythrityl tetrapelargonate, pentaerythrityl tetraisostearate, pentaerythrityl tetraoctanoate,Propylene glycol dicaprylate, propylene glycol dicaprate, tridecyl erucate, triisopropyl citrate, triisostearyl citrate, glyceryl trilactate, glyceryl trioctanoate, trioctyldodecyl citrate, trioleyl citrate, propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate, and / or polyethylene glycol distearates may be selected. In a preferred embodiment, the composition comprises at least one fatty acid ester and / or one fatty alcohol ester, for example, pentaerythrityl tetraisostearate.

[0071] Non-limiting examples of waxes that may be used include beeswax, hydrogenated olive alkyl esters, carnauba wax, candelilla wax, ouricoury wax, Japanese wax, cork fiber wax or sugar cane wax, rice wax, rice bran wax, montan wax, paraffin wax, lignite wax or microcrystalline wax, ceresin or ozokerite, palm kernel glycerides / hydrogenated palm glycerides, palm butter, sumac wax, citrus aurantium dulcis (orange) peel wax, theobroma grandiflorum seed butter, helianthus annuus (sunflower) seed wax, siliconyl candelilla wax, China wax, cetyl palmitate, lanolin, shellac, spermaceti, cetyl esters, hydrogenated castor wax; triglyceride esters such as tribehenin (glyceryl tribehenate);Synthetic waxes such as hydrocarbon waxes and polyethylene waxes obtained by the polymerization or copolymerization of ethylene, polypropylene waxes, or combinations of two or more of any of these waxes. However, in some embodiments, the compositions are free or essentially free of waxes.

[0072] In certain embodiments, the composition may include fatty compounds selected from oils of animal, vegetable or mineral origin (for example, lanolin, squalene, fish oil, perhydrosqualene, mink oil, turtle oil, soybean oil, grapeseed oil, sesame oil, corn oil, rapeseed oil, oil of sunflower, cottonseed oil, avocado oil, olive oil, castor oil, jojoba oil, peanut oil, sweet almond oil, palm oil, cucumber oil, hazelnut oil, apricot kernel oil, wheat germ oil, tamanu oil, macadamia oil, coconut oil, cereal germ oil, candlenut oil, thistle oil, candelilla oil, safflower oil, safflower oil or shea butter), linear or branched hydrocarbons (e.g., polybutene, hydrogenated polyisobutene, polyisoprene, polydecenes such as hydrogenated polydecene, and / or linear, branched and / or cyclic alkanes that are facultatively volatile, such as, for example, isohexadecane, isododecane, isododecane or isohexadecane), optionally branched and / or unsaturated fatty acids (for example, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid),fatty alcohols other than those described above (e.g., alkoxylated fatty alcohols), mono- and / or polyesters of fatty acids and / or fatty alcohols (e.g., mono- and polyesters of hydroxy acids and fatty alcohols, esters of benzoic acid and fatty alcohols, polyesters of polyols, C5-C9 dipentaerythrityl esters, trimethylolpropane polyesters, propylene glycol polyesters, or hydrogenated castor oil polyesters), perfluorinated and / or organofluorinated oils, fluorosilicone oils, or mixtures of two or more of these. In some embodiments, the compositions include at least one oil, e.g., a mineral oil.

[0073] Where appropriate, the total amount of fatty compounds in the composition may range from approximately 0.01% to approximately 15%, such as up to approximately 12%, up to approximately 10%, up to approximately 9%, up to approximately 8%, up to approximately 7%, up to approximately 6%, up to approximately 5%, or up to approximately 4% by weight, relative to the total weight of the composition. For example, the total amount of fatty compounds may range from approximately 0.1% to approximately 12%, from approximately 0.25% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 0.75% to approximately 6%, or from approximately 1% to approximately 5% by weight, relative to the total weight of the composition. In at least some embodiments, however, the compositions are free or substantially free of fatty compounds. Thickening agents

[0074] The compositions according to the disclosure optionally include at least one thickening agent. Useful thickening agents include, but are not limited to, semi-synthetic polymers, such as semi-synthetic cellulosic derivatives; synthetic polymers, such as carbomers, poloxamers, and beheneth-25 acrylate / methacrylate copolymers; acrylate copolymers; polyethyleneimines (e.g., PEL10); natural polymers, such as acacia, tragacanth, alginates (e.g., sodium alginate), carrageenan, and vegetable gums, such as xanthan gum, guar gum, petroleum jelly, waxes, associated particulate colloids, such as bentonite, colloidal silicon dioxide and microcrystalline cellulose, celluloses such as hydroxyethylcellulose and hydroxypropylcellulose, and guars such as hydroxypropyl guar.

[0075] In some embodiments, the thickening agent may be selected from associative thickening polymers such as anionic associative polymers, amphoteric associative polymers, cationic associative polymers, or nonionic associative polymers. A non-limiting example of an amphoteric associative polymer is beheneth-25 acrylate / methacrylate copolymer, and non-limiting examples of anionic associative polymers include acrylate copolymer and acrylates-4 crosslinked polymer.

[0076] Where appropriate, the total quantity of thickening agents may range from about 0.001% to about 5%, such as from about 0.01% to about 4%, from about 0.1% to about 3.5%, from about 0.2% to about 3%, from about 0.3% to about 2.5% by weight, from about 0.4% to about 2%, from about 0.5% to about 1.5%, or from about 0.5% to about 1% by weight, relative to the total weight of the composition. Amino acids and aminosulfonic acids

[0077] The compositions may optionally include at least one amino acid and / or at least one aminosulfonic acid, although in at least some embodiments the compositions are free or essentially free of amino acids and / or aminosulfonic acids. Salts of amino acids and aminosulfonic acids may also be selected and are expressly included whether or not they are indicated.

[0078] Amino acids that may be chosen include, for example, alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine and valine. Examples of aminosulfonic acids include aminomethanesulfonic acid, 2-aminoethanesulfonic acid (taurine), aminopropanesulfonic acid, aminobutanesulfonic acid, aminohexanesulfonic acid, aminoisopropylsulfonic acid, aminododecylsulfonic acid, aminobenzenesulfonic acid, aminotoluenesulfonic acid, sulfanilic acid, chlorosulfanilic acid, diaminobenzenesulfonic acid, aminophenolsulfonic acid, aminopropylbenzenesulfonic acid, and aminohexylbenzenesulfonic acid. In some embodiments, the hair treatment compositions comprise at least one amino acid and at least one aminosulfonic acid.In some embodiments, the composition includes arginine, serine, betaine and / or . taurine, for example arginine, betaine, or one of their combinations. For example, in some embodiments, arginine, serine, betaine and / or taurine are the only amino acids and aminosulfonic acids present in the compositions, and in some embodiments, arginine and / or betaine are the only amino acids and aminosulfonic acids present in the compositions.

[0079] Where appropriate, the total amount of amino acids and / or aminosulfonic acids may range from about 0.01% to about 10%, such as from about 0.1% to about 8%, or from about 0.5% to about 6% by weight, relative to the total weight of the composition.For example, in some embodiments, the total amount of amino acid(s) and / or aminosulfonic acid(s) may range from approximately 0.5% to approximately 5%, from approximately 0.5% to approximately 4%, from approximately 0.5% to approximately 3%, from approximately 0.5% to approximately 2.5%, from approximately 0.5% to approximately 2%, from approximately 0.5% to approximately 1.5%, from approximately 0.5% to approximately 1%, from approximately 0.75% to approximately 5%, from approximately 0.75% to approximately 4%, from approximately 0.75% to approximately 3%, from approximately 0.75% to approximately 2.5%, from approximately 0.75% to approximately 2%, from approximately 0.75% to approximately 1.5%, from approximately 0.75% to approximately 1%, from approximately 1% to approximately 5%, from about 1% to about 4%, from about 1% to about 3%, from about 1% to about 2.5%, from about 1% to about 2%, or from about 1% to about 1.5% by weight, relative to the total weight of the composition.In some embodiments, the total amount of amino acid(s) and / or aminosulfonic acid(s) may be approximately 0.25%, 0.5%, 0.75%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, or 10% by weight, relative to the total weight of the composition, including all ranges and subranges using any of the preceding values ​​as upper and lower limits. Organic amine compounds.

[0080] In some embodiments, the compositions optionally include at least one organic amine compound, although in at least some embodiments, the compositions are free or essentially free of organic amine compounds. Optionally, the compositions may include more than one organic amine compound, such as at least two organic amine compounds.

[0081] In various embodiments, alkanolamines, such as mono-, di-, or trialkanolamines, comprising one to three identical or different C1-C4 hydroxyalkyl radicals, may be used. By way of example, organic amines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, 3-amino- 1,2-propanediol, 3-dimethylamino-l,2-propanediol, tris(hydroxymethyl)aminomethane, guanidine, or combinations of two or more of these may be chosen.

[0082] Where appropriate, the total amount of organic amine compounds may range from about 0.01% up to about 15%, such as up to about 14%, up to about 13%, up to about 12%, up to about 11%, up to about 10%, up to about 9%, up to about 8%, up to about 7%, up to about 6%, up to about 5%, up to about 4.5%, up to about 4%, up to about 3.5%, up to about 3%, up to about 2.5%, or up to about 2% by weight, relative to the total weight of the composition. For example, the total amount of organic amine compounds may range from about 0.01% to about 12%, from about 0.1% to about 10%, from about 0.5% to about 8%, or from about 1% to about 6% by weight, relative to the total weight of the composition. In at least some embodiments, the compositions comprise at least one organic amine compound, and have a total amount of organic amine compounds ranging from about 0.5% to about 12%, from about 0.5% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 0.5% to approximately 5%, from approximately 0.5% to approximately 4%, from approximately 0.5% to approximately 3%, from approximately 0.75% to approximately 12%, from approximately 0.75% to approximately 10%, from approximately 0.75% to approximately 8%, from approximately 0.75% to approximately 5%, from approximately 0.75% to approximately 4%, from approximately 0.75% to approximately 3%, from approximately 1% to approximately 12%, from approximately 1% to approximately 10%, from approximately 1% to approximately 8%, from approximately 1% to approximately 5%, from approximately 1% to approximately 4%, from approximately 1% to approximately 3%, from approximately 1.25% to approximately 12%, from approximately 1.25% to approximately 10% from approximately 1.25% to approximately 8%, from approximately 1.25% to approximately 5%, from approximately 1.25% to approximately 4%, from approximately 1.25% to approximately 3%, from approximately 1.5% to approximately 12%, from approximately 1.5% to approximately 10%, from approximately 1.5% to approximately 8%, from approximately 1.5% to approximately 5%, from approximately 1.5% to approximately 4%, or from approximately 1.5% to approximately 3%, by weight, relative to the total weight of the composition. In various embodiments,The total amount of organic amine compounds may be approximately 0.25%, 0.5%, 0.75%, 1%, 1.25%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, or 12% by weight, relative to the total weight of the composition, or may be present in any range using any of the preceding values ​​as upper and lower limits. Chelating agents

[0083] The compositions optionally include at least one chelating agent (also referred to as a "chelator"). Without intending to make a theory of it, chelators are believed to work synergistically with color-removing agents to enhance color-removing efficacy and help to alter the color, tone, and / or shade of the hair, and minimize hair damage. It is understood that salts and derivatives of chelating agents are included, whether specified or not, unless expressly stated otherwise. Non-limiting examples of salts include sodium salts, ammonium salts, lithium salts, potassium salts, and calcium salts, and non-limiting examples of derivatives include hydrates and esters.

[0084] By way of non-limiting example, chelating agents may be selected from citrates, nitrogen-containing aminocarboxylates, phosphate-free such as ethylenediaminedisuccinic acid (EDDS), ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA), aminophosphonates such as diethylenetriaminepentamethylenephosphonic acid and ethylenediaminetetramethylenephosphoric acid, nitrogen-free phosphonates such as ethydronic acid (HEDP), nitrilotriacetic acid (NTA), salts and esters of oxalic acid, tartaric acid, phytic acid, gluconic acid or glutamic acid, for example N,N-bis(carboxymethyl)glutamic acid, or combinations thereof.In some embodiments, the chelators that may be chosen include ethylenediaminetetraacetic acid (EDTA), hydroxyethylethylenediaminetriacetic acid (HEDTA), manganese gluconate, zinc gluconate, sodium phytate, tetrasodium glutamate diacetate (GLDA), butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), N,N'-bis(3,4,5-trimethoxybenzyl)ethylenediamine, diethylenetriaminepentaacetic acid (DTPA), ethylenediaminedisuccinic acid (EDDS), or combinations of two or more of these.

[0085] Where applicable, the total amount of chelating agents will vary, but is typically at least about 0.01% and less than about 5%, such as less than about 4%, or less than about 3% by weight, relative to the total weight of the composition. In various embodiments, the compositions comprise a total amount of chelating agents ranging from about 0.01% to about 2.5%, such as from about 0.05% to about 2.25%, from about 0.1% to about 2%, from about 0.25% to about 1.75%, or from about 0.5% to about 1.5%, relative to the total weight of the composition. For example, the total quantity of chelating agents can range from approximately 0.1% to approximately 2.5%, from approximately 0.1% to approximately 2%, from approximately 0.1% to approximately 1.5%, from approximately 0.1% to approximately 1.25%, from approximately 0.1% to approximately 1%, from approximately 0.25% to approximately 2.5%, from approximately 0.25% to approximately 2%, from approximately 0.25% to approximately 1.5%, from approximately 0.25% to about 1.25%, from about 0.25% to about 1%, from about 0.5% to about 2.5%, from about 0.5% to about 2%, from about 0.5% to about 1.5%, from about 0.5% to about 1.25%, from about 0.5% to about 1%, from about 0.75% to about 2.5%, from about 0.75% to about 2%, from about 0.75% to about 1.5%, from about 0.75% to about 1.25%, or from about 0.75% to about 1% by weight, relative to the total weight of the composition.In some embodiments, the total quantity of chelating agents is approximately 0.05%, approximately 0.06%, approximately 0.07%, approximately 0.08%, approximately 0.09%, approximately 0.1%, approximately 0.2%, approximately 0.3%, approximately 0.4%, approximately 0.5%, approximately 0.6%, approximately 0.7%, approximately 0.8%, approximately 0.9%, approximately 1%, approximately 1.1%, approximately 1.2%, approximately 1.3%, approximately 1.4%, approximately 1.5%, approximately 1.6%, approximately 1.7%, approximately 1.8%, approximately 1.9%, approximately 2%, approximately 2.1%, approximately 2.2%, approximately 2.3%, approximately 2.4% or approximately 2.5%, or any range using any of the previous values ​​as upper and lower bounds. Lewis acids

[0086] The compositions optionally include at least one Lewis acid. Without intending to develop a theory, it is believed that Lewis acids work synergistically with color-removing agents to enhance color removal efficacy and minimize hair damage.

[0087] In various embodiments, metal-based Lewis acids may be used. For example, Lewis acids selected from alkali or alkaline earth metal salts, such as tin, aluminum, sodium, potassium, calcium, manganese, boron, indium, zinc, and / or magnesium, may be useful. Useful salts include both inorganic and organic salts, for example, halides, hydroxyhalides, and oxyhalides. Non-limiting examples include tin chloride, aluminum chloride, zinc chloride, iron chloride, aluminum sulfate, etc. Derivatives of such compounds may also be selected, for example, aluminum chlorohydrate. It should be understood that derivatives of Lewis acids are included whether or not they are explicitly mentioned, unless otherwise indicated.In some embodiments, strong Lewis acids with a higher electron-donating potential are chosen. For example, strong Lewis acids that can be used may have up to five electrons in the valence shell.

[0088] Where applicable, the total amount of Lewis acids will vary, but is typically less than about 5%, such as less than about 4%, or less than about 3% by weight, relative to the total weight of the composition. In various embodiments, the compositions comprise a total amount of Lewis acids ranging from about 0.01% to about 2.5%, such as from about 0.05% to about 2.25%. from about 0.1% to about 2%, from about 0.25% to about 1.75%, or from about 0.5% to about 1.5%, relative to the total weight of the composition. For example, the total amount of Lewis acids can range from about 0.1% to about 2.5%, from about 0.1% to about 2%, from about 0.1% to about 1.5%, from about 0.1% to about 1.25%, from about 0.1% to about 1%, from about 0.25% to about 2.5%, from about 0.25% to about 2%, from about 0.25% to about 1.5%, from about 0.25% to about 1.25%, from about 0.25% to about 1%, from about 0.5% to about 2.5%, from about 0.5% to about 2%, from about 0.5% to about 1.5%, from about 0.5% to about 1.25%, from about 0.5% to about 1%, from about 0.75% to about 2.5%, from about 0.75% to about 2%, from about 0.75% to about 1.5%, from about 0.75% to about 1.25%, or from about 0.75% to about 1% by weight, relative to the total weight of the composition.In some embodiments, the total amount of Lewis acids is approximately 0.05%, approximately 0.06%, approximately 0.07%, approximately 0.08%, approximately 0.09%, approximately 0.1%, approximately 0.2%, approximately 0.3%, approximately 0.4%, approximately 0.5%, approximately 0.6%, approximately 0.7%, approximately 0.8%, approximately 0.9%, approximately 1%, approximately 1.1%, approximately 1.2%, approximately 1.3%, approximately 1.4%, approximately 1.5%, approximately 1.6%, approximately 1.7%, approximately 1.8%, approximately 1.9%, approximately 2%, approximately 2.1%, approximately 2.2%, approximately 2.3%, approximately 2.4% or approximately 2.5%, or any range using any of the preceding values ​​as upper and lower limits. Hyaluronic acid

[0089] The compositions optionally include hyaluronic acid and / or one or more of its salts. Without intending to make a theory, it is believed that hyaluronic acid acts synergistically with color-removing agents to reduce odor and enhance color removal, helping to alter the color, tone, and / or shade of the hair, and also improves the sensory properties of the treated hair. It should be understood that hyaluronic acid salts are included, whether specified or not, unless expressly stated otherwise. Non-limiting examples of salts include sodium salts, ammonium salts, lithium salts, potassium salts, and calcium salts. For example, sodium hyaluronate may be chosen.

[0090] Where applicable, the compositions comprise a total amount of hyaluronic acid and / or its salts ranging from approximately 0.1% to approximately 15% by weight, such as from approximately 0.25% to approximately 12%, from approximately 0.5% to approximately 10%, from approximately 0.75% to approximately 8%, or from approximately 1% to approximately 6% by weight, relative to the total weight of the composition. For example, the total amount of hyaluronic acid and its salts may range from approximately 0.1% to approximately 10%, from approximately 0.1% to approximately 8%, for example, from approximately 0.1% to approximately 6%, from approximately 0.1% to approximately 5%, from approximately 0.1% to approximately 4%, from approximately 0.1% to approximately 3%, from approximately 0.1% to approximately 2%, from approximately 0.1% to approximately 1%, from approximately 0.25% to approximately 10%, from approximately 0.25% to approximately 8%, from approximately 0.25% to approximately 6%, from approximately 0.25% to approximately 5%, from approximately 0.25% to approximately 4%, from approximately 0.25% to approximately 3%, from approximately 0.25% to approximately 2%, from approximately 0.25% to approximately 1%, from approximately 0.5% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 0.5% to approximately 6%, from approximately 0.5% to approximately 5%, from approximately 0.5% to approximately 4%, from approximately 0.5% to approximately 3%, from approximately 0.5% to approximately 2%, from approximately 0.5% to approximately 1%, from approximately 0.75% to approximately 10%, from approximately 0.75% to approximately 8%, from approximately 0.75% to approximately 6%, from approximately 0.75% to approximately 5%, from approximately 0.75% to approximately 4%, from approximately 0.75% to approximately 3%, from approximately 0.75% to approximately 2%, from approximately 0.75% to approximately 1%, from approximately 1% to approximately 10%, from approximately 1% to approximately 8%, from approximately 1% to approximately 6%, from approximately 1% to approximately 5%from about 1% to about 4%, from about 1% to about 3%, from about 1% to about 2%, from about 1.25% to about 10%, from about 1.25% to about 8%, from about 1.25% to about 6%, from about 1.25% to about 5%, from about 1.25% to about 4%, from about 1.25% to about 3%, from about 1.25% to about 2%, from about 1.5% to about 10%, from about 1.5% to about 8%, from about 1.5% to about 6%, from about 1.5% to about 5%, from about 1.5% to about 4%, from about 1.5% to about 3%, from about 1.5% to about 2%, from about 1.75% to about 10%, from about 1.75% to approximately 8%, from approximately 1.75% to approximately 6%, from approximately 1.75% to approximately 5%, from approximately 1.75% to approximately 4%, from approximately 1.75% to approximately 3%, from approximately 2% to approximately 10%, from approximately 2% to approximately 8%, from approximately 2% to approximately 6%, from approximately 2% to approximately 5%, from approximately 2% to approximately 4%, from approximately 2% to approximately 3%, from approximately 2.25% to approximately 10%, from approximately 2.25% to approximately 8%, from approximately 2.25% to approximately 6%from approximately 2.25% to approximately 5%, from approximately 2.25% to approximately 4%, or from approximately 2.25% to approximately 3% by weight, relative to the total weight of the composition. In other embodiments, the total amount of hyaluronic acid and its salts may be approximately 0.5%, approximately 0.75%, approximately 1%, approximately 1.25%, approximately 1.5%, approximately 1.75%, approximately 2%, approximately 2.25%, approximately 2.5%, approximately 2.75%, approximately 3%, approximately 3.25%, approximately 3.5%, approximately 3.75%, approximately 4%, approximately 4.25%, or approximately 4.5%, or within any range using any of the preceding values ​​as upper and lower limits. Auxiliary components

[0091] The compositions according to the disclosure may optionally include one or more auxiliary components. Non-limiting examples include preservatives, fragrances such as perfumes, pH adjusters, salts, antioxidants, vitamins (e.g., ascorbic acid, tocopherol), vitamin derivatives, botanical extracts, buffers, and sequestering agents. and similar. In some embodiments, the compositions are free or essentially free from any of the aforementioned elements, for example the compositions may be free or essentially free from antioxidants, free or essentially free from ascorbic acid, etc.

[0092] The total quantity of auxiliary components, if any, typically ranges from about 0.01% to about 15% by weight, relative to the total weight of the composition.For example, in some embodiments, the individual quantities of each component or the total quantity of components may range from approximately 0.1% to approximately 10%, from approximately 0.1% to approximately 8%, from approximately 0.1% to approximately 5%, from approximately 0.1% to approximately 4%, from approximately 0.1% to approximately 3%, from approximately 0.1% to approximately 2%, from approximately 0.25% to approximately 10%, from approximately 0.25% to approximately 8%, from approximately 0.25% to approximately 5%, from approximately 0.25% to approximately 4%, from approximately 0.25% to approximately 3%, from approximately 0.25% to approximately 2%, from approximately 0.5% to approximately 10%, from approximately 0.5% to approximately 8%, from approximately 0.5% to approximately 5%, from approximately 0.5% to approximately 4%, from approximately 0.5% to about 3%, from about 0.5% to about 2%, from about 0.75% to about 10%, from about 0.75% to about 8%, from about 0.75% to about 5%, from about 0.75% to about 4%, from about 0.75% to about 3%, or from about 0.75% to about 2% by weight, relative to the total weight of the composition.

[0093] In some embodiments, the compositions may be free or essentially free of one or more of the following: thiolactic acid and its salts, ascorbic acid and its salts, dyes or pigments for coloring hair, persulfates, peroxides and / or ammonia. In still other embodiments, the compositions may comprise less than 5%, less than 4.5%, less than 4%, less than 3.5%, less than 3%, less than 2.5%, less than 2%, less than 1.5%, less than 1.25%, less than 1%, less than 0.75%, less than 0.5%, less than 0.4%, less than 0.3%, less than 0.2%, less than 0.1%, less than 0.05% or less than 0.01% of a total amount of ascorbic acid and its salts, persulfates, peroxides, or ammonia, or a total amount of any combination of two or more of these.

[0094] The compositions can be in any suitable form. For example, the compositions can be a liquid, a gel, a cream-gel, a cream, a serum, etc. Advantageously, the compositions can be used as a one-part hair color removal composition, as opposed to known hair color removal systems that require the application of several compositions to effectively remove hair color.

[0095] The pH of the composition is typically acidic, namely less than 7. For example, compositions may have a pH ranging from about 1 to about 7, such as from about 2.5 to about 6.5. In some embodiments, the compositions have a pH ranging from about 2.5 to about 5, from about 2.75 to about 4.75, from about 3 to about 4.5, or from about 3 to about 4. For example, the pH of the composition may be about 3, about 3.25, about 3.5, about 3.75, about 4, about 4.25, or about 4.5. II. PROCESSES

[0096] In various embodiments, the disclosure relates to processes for modifying the color, tone, and / or shade of hair. The compositions and processes can be used to remove all or part of certain dyes, while having minimal or no impact on other dyes. As such, the compositions can be intended to remove certain hair dyes to achieve the result desired by the consumer. For example, the processes may include processes for increasing the warmth of a hair color, for example, by targeting the removal of dyes that produce a cooler color. As a further example, the processes may include processes for enhancing cool tones by targeting dyes for removal that produce a warmer color.

[0097] It is understood by those skilled in the art that the color, tone, and shade of the hair are evaluated using the CIE L* a* b* system. In this system, the change in color, tone, and / or shade is determined by evaluating the hair color after treatment (L*2, a*2, b*2) against the hair color before treatment (L*ba*bb*i). The overall color change (AE) is defined by: =. y ( LJ — Li)" + H- (¾ —

[0098] In this system, the three parameters represent, respectively, the color intensity (L*), the green / red color axis (a*) (for example, a higher a* is redder), and the blue / yellow color axis (b*) (for example, a higher b* is yellower). The higher the value of L*, the lighter the color; the higher the value of a*, the redder the color; and the higher the value of b*, the yellower the color. Furthermore, the higher the value of AE, the greater the difference in color between the treated hair and the hair before treatment. Thus, the processes may include modifying the color, tone, and / or shade of the hair by varying the values ​​of L*2, a*2, and / or b*2, and / or by increasing the AE value relative to the hair before treatment.

[0099] The compositions and processes are thus capable of obtaining a desired hair color, tone, and / or shade even without the application, or with minimal application, of subsequent hair coloring compositions. However, although the hair color, tone, and / or shade can be modified using the compositions and processes as disclosed, In at least some embodiments, the processes include an additional step of coloring or shading the hair after the hair treatment according to disclosure.

[0100] The disclosure further relates to processes for removing color from keratin fibers, particularly hair that has been previously dyed with an oxidative dye. In particular, the compositions and processes according to the disclosure are especially useful for removing darker hair colors that may otherwise be difficult to remove with traditional hair color removal compositions that do not use oxidizing agents. By way of non-limiting example, darker colors that can be removed in the processes according to the disclosure include blacks, ash browns, chestnuts, ash mochas, natural ash (blue or green), ash violets, violets, red violets, reds, red mochas, red chestnuts, mahogany, red coppers, coppers, and golds.

[0101] The methods include applying a composition as disclosed to keratin fibers, for example, hair that has been previously dyed with at least one oxidative dye compound, optionally leaving the composition on the keratin fibers for a period of time (“processing time,” “resting time,” or “application time”), and subsequently rinsing or removing the composition from the keratin fibers. Thus, the methods may include a two-step process, which is simpler and more efficient than known three-step or more-step processes where multiple compositions are applied to the hair for color removal before rinsing.

[0102] The appropriate application time will be determined according to the color to be removed, and in various embodiments may last up to approximately 5 minutes, up to approximately 10 minutes, up to approximately 20 minutes, up to approximately 30 minutes, up to approximately 45 minutes, up to approximately 1 hour, up to approximately 2 hours, etc., such as from approximately 1 minute to approximately 60 minutes, from approximately 2 minutes to approximately 50 minutes, from approximately 5 minutes to approximately 45 minutes, or from approximately 10 minutes to approximately 40 minutes. It may be advantageous, in various embodiments, to leave the color-removing composition on the hair for at least approximately 15 minutes, and up to approximately 60 minutes. For example, the application time may range from approximately 15 minutes to approximately 60 minutes, from approximately 20 minutes to approximately 60 minutes, or from approximately 25 minutes to approximately 60 minutes.Optionally, the hair can be covered, for example with a treatment cap or aluminum foil, for at least part of the application period.

[0103] In certain embodiments, the hair onto which a composition according to the disclosure has been applied may be heated during the processing time. By For example, hair may be heated using a hairdryer, hair dryer hood, or any other method for at least part of the processing time. Hair may be heated using temperatures above room temperature, for example, from approximately 27°C to approximately 90°C, from approximately 30°C to approximately 80°C, from approximately 35°C to approximately 70°C, or from approximately 40°C to approximately 50°C. For example, a heating temperature range might be approximately 40°C to approximately 45°C, such as approximately 40°C to approximately 43°C.

[0104] In various embodiments, it may be advantageous to heat the treated hair for at least part of the processing time, or to leave it unheated for at least part of the processing time. For example, after applying the color-removing composition to the hair, the treated hair may be left to process for a period of time at room temperature, followed by a period of time with heat applied. As an alternative example, after applying the color-removing composition to the hair, the treated hair may be heated, followed by a period of time during which the hair is processed at room temperature.Other variations of these processes, consisting of alternating heating the treated hair and leaving the treated hair at room temperature, may be used, such as, for example, heating followed by room temperature followed by heating, or treatment at room temperature followed by heating followed by treatment at room temperature, and so on.

[0105] Surprisingly, the compositions and processes according to the disclosure effectively remove hair color without the use of thiolactic acid and / or its salts, ascorbic acid and / or its salts, persulfates, peroxides and / or ammonia, without the damage typically associated with color-removing compositions containing oxidizing agents, and without the odor typically associated with bleaching compositions containing thiol-based compounds.

[0106] In certain embodiments, it may be advantageous to perform the processes described herein more than once in order to achieve the desired level of color removal. Since the compositions minimize hair damage and have a reduced odor compared to known color-removing compositions, consumers are able to achieve the desired color removal without the disadvantages associated with such known compositions.

[0107] It should be understood that the compositions according to the disclosure are not hair coloring compositions. As such, the compositions are free or substantially free of dyes or pigments for coloring hair, in particular oxidative dye compounds. The compositions may optionally include a dye or pigment for coloring the composition, However, it will be understood that the quantity and / or type of dye or pigment will be chosen so as not to impart color to the hair. Similarly, the processes disclosed herein are not processes for imparting color to hair.

[0108] After describing in detail the numerous embodiments of the present invention, it will become apparent that modifications and variations are possible without departing from the scope of the disclosure defined in the appended claims. Furthermore, it should be noted that all the examples in this disclosure, while illustrating numerous embodiments of the disclosure, are provided by way of non-limiting examples and should therefore not be considered as limiting the various aspects thus illustrated. It should be understood that all definitions in this document are provided only within the meaning of this disclosure.

[0109] As used herein, the terms "comprising", "having" and "including" (or "comprehension", "having" and "include") are used in their open, non-limiting sense.

[0110] The expressions "one or more" and "at least one" are interchangeable and expressly include individual components as well as mixtures / combinations. Similarly, the expression "one of its / their salts" also refers to "its / their salts." Thus, when the disclosure refers to "at least one element selected from the group consisting of A, B, C, D, E, F, one of their salts or mixtures thereof," it indicates that one or more elements from A, B, C, D, and F may be included, that one or more salts from a salt of A, a salt of B, a salt of C, a salt of D, a salt of E, and a salt of F may be included, or that a mixture of any two elements from A, B, C, D, E, F, a salt of A, a salt of B, a salt of C, a salt of D, a salt of E, and a salt of F may be included.

[0111] The expression "and / or" should be understood as including both conjunctive and disjunctive clauses. For example, "water and / or non-aqueous solvents" means "water and non-aqueous solvents" as well as "water or non-aqueous solvents", and expressly covers cases of either.

[0112] As used herein, the expressions "and their mixtures", "and one of their mixtures", "and one of their combinations", "or their mixtures", "or one of their mixtures", "or their combinations", and "or one of their combinations" are used interchangeably to indicate that the list of components immediately preceding the phrase, such as "A, B, C, D, or mixtures thereof", means that the component(s) can / may be chosen from A, B, C, D, from A + B, from A + B + C, from A + D, from A + C + D, etc., without limitation on the variations thereof. Thus, the components may be used individually or in any of their combinations.

[0113] For the purposes of this disclosure, it should be noted that, in order to provide a more concise description, some of the quantitative expressions given in the This document does not qualify with the term "approximately". It is understood, whether the term "approximately" is used explicitly or implicitly, that each quantity given herein is intended to refer to the actual value given, and it is also intended to refer to the approximation of that given value that would be reasonably deduced by a person skilled in the art, including approximations due to experimental and / or measurement conditions for that given value.

[0114] All ranges and quantities stated herein are deemed to include subranges and quantities using any disclosed point as a bound, and all bounds are deemed to be inclusive unless expressly stated otherwise. Thus, a range of "1% to 10%, such as 2% to 8%, such as 3% to 5%" is deemed to encompass ranges of "1% to 8%", "1% to 5%", "2% to 10%", and so on. All numbers, quantities, ranges, etc., are deemed to be modified by the term "approximately", whether or not expressly stated, unless expressly stated otherwise. Similarly, a given range of "approximately 1% to 10%" is deemed to have its bounds of both 1% and 10% modified by the term "approximately". The term "approximately" is used here to indicate a difference of up to + / - 10% from the stated number, such as + / - 9%, + / - 8%, + / - 7%, + / - 6%, + / - 5%, + / - 4%, + / - 3%, + / - 2%, or + / - 1%.Unless expressly stated otherwise, "approximately" means + / - 5%. Similarly, all range boundaries are understood to be disclosed individually, such that, for example, a range of 1:2 to 2:1 is understood to disclose a ratio of 1:2 and 2:1.

[0115] As used herein, if a component is described as being present "in an amount less than or equal to" a certain amount, it is expected that this component is in fact present in the composition, namely, present in an amount greater than 0%.

[0116] All quantities and ratios stated herein are given on a weight-for-weight basis, unless otherwise stated. Unless otherwise stated, all percentages stated herein are by weight of active ingredient.

[0117] As used herein, the expression "apply a composition to keratinous fibers," and its variations, is intended to mean bringing keratinous fibers, such as hair, into contact with at least one of the compositions in the disclosure, in any manner whatsoever. It may also mean bringing the keratinous fibers into contact with an effective amount of the composition.

[0118] As used herein, the term “salts” throughout the disclosure may include salts having a counterion such as an alkali metal, alkaline earth metal, or ammonium counterion. This list of counterions, however, is not exhaustive. Salts also include a dissociated form of a compound, for example, in an aqueous solution.

[0119] Unless otherwise defined for any specific embodiment, the expression "substantially free" or "essentially free" as used here means that there is less than approximately 5% by weight of a specific material added to a composition, relative to the total weight of the composition. For example, compositions may include less than approximately 4%, less than approximately 3%, less than approximately 2%, less than approximately 1.5%, less than approximately 1%, less than approximately 0.5%, less than approximately 0.1%, less than approximately 0.01%, less than approximately 0.001%, or less than approximately 0.0001% of the specified material. As such, it is envisaged that any component described herein for use in compositions may be present in compositions in amounts less than about 5%, less than about 4%, less than about 3%, less than about 2%, less than about 1%, less than about 0.5%, less than about 0.1%, less than about 0.01%, less than about 0.001%, or less than about 0.0001%, and the composition shall be regarded as "substantially free" from such material.A composition "free" of a component is understood to contain no quantity of the specified component. However, it is understood that the terms "free" and "substantially free" refer to the amount of a component added to the composition, without including any amount of the component present in the composition as a minor component in a raw material. For example, a composition "free" of waxes may not have wax included as an intended component, but may nevertheless contain a pigment that is coated with wax, since such a wax would be considered a minor component of the pigment material and should not provide the benefits to the composition that would be expected from including a wax itself as an intended component.

[0120] As used herein, the terms “treat,” “treated,” “treatment,” and variations thereof are not intended to be restrictive, but rather are intended to indicate simply that one or more compositions are applied to the hair and optionally removed from the hair. For example, hair that is “treated” with a composition according to the disclosure may have had the composition applied, and / or may have had the composition applied and removed, for example, by rinsing or towel drying. As a further example, hair that is “treated” with a composition according to the disclosure may have had the composition applied, and / or may have had the composition applied and rinsed from the hair.

[0121] As used herein, the expressions "alter hair color," "hair color alteration," and their variations mean that the color, tone, and / or shade of the hair is changed by removing previously applied hair dyes from the hair. Furthermore, the expressions "color removal," "hair color removal," and their variations should be understood as referring to the removal of some or all of the hair dye previously applied to the hair. It should be understood that the removal of artificial color may include the removal of all the color, or it may include the removal of various color tones. Therefore, in some embodiments, an overall change in hair color will be observed (e.g., higher AE), whereas in other embodiments, even if the overall color change is not considered significant, a variation in one or more of the L*, a*, or b* values ​​will be observed.

[0122] As used herein, "artificial color" means a color that has been imparted to the hair by means of a prior application of a composition capable of changing the color of the hair, for example with permanent, semi-permanent, or quasi-permanent hair dye compositions. In various embodiments, the artificial color that is removed from the hair is a color that has been imparted to the hair by one or more oxidative dye compounds.

[0123] As used herein, the expressions "odorless", "minimal odor", "odorless", "reduced odor" or similar are intended to refer to the odor that is typically associated with color-removing compositions containing thiolactic acid-based color removers, an odor that hair coloring professionals and consumers typically find acrid and / or nauseating.

[0124] As used herein, color removal that is “durable” or “long-lasting” means that a certain degree of color removal achieved with processes according to disclosure (T0) persists after seven days (T7 exhibits AE > 0). For example, in various embodiments, at least about 10%, at least about 20%, at least about 30%, at least about 40%, at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90%, or at least about 95% of the AE achieved at T0 remains at T7.

[0125] The following examples are intended to illustrate embodiments of this disclosure but are not intended to be limiting. It will be obvious to those skilled in the art that various modifications and variations can be made to the compositions and processes of the invention without departing from the spirit or scope of the invention. EXAMPLES

[0126] The following examples are intended to be non-limiting and explanatory only. In the Examples, unless otherwise indicated, quantities are expressed as a percentage by weight (% by weight) of active substances, relative to the total weight of the composition.

[0127] In these examples, the hair color change is evaluated using the CIE L* a* b* system, with Colorshot MS, where the change is determined by evaluating the hair color after treatment (L*2, a*2, b*2) against the hair color before treatment (L*ba*bb*i). The color change (AE) is calculated as follows: — y' + Example 1 - Compositions

[0128] Compositions 1A-1J according to disclosure and comparative composition Cl were prepared as shown in Tables 1A-1 and 1A-2. The pH of each of the compositions in Tables 1A-1 and 1A-2 was less than 7.

[0129] [Table 1] TABLE 1A-1 - Hair Colour Removal / Modification Compositions Cl IA IB IC 1D Thickeners 0.7 0.7 0.7 0.7 0.7 Clays 5.0 Ethanolamine 1.7 3.9 Ketoglutaric acid 10.0 10.0 10.0 Acetic acid 12.0 Arginine 3.0 3.0 3.0 Thiosalicylic acid 5.0 5.0 5.0 5.0 Thiolactic acid 5.0 Non-ionic surfactants 1.5 1.5 1.5 1.5 1.5 Fragrance 1.0 1.0 1.0 Solvents (water and non-aqueous solvents) Qs per 100 Qs per 100 Qs per 100 Qs per 100 Qs per 100

[0130] [Table 2] TABLE 1A-2 - Hair Colour Removal / Modification Compositions 1E 1F IG 1H 11 U Thickeners 0.7 0.7 0.7 0.7 0.7 0.7 AMINOMETHYL PROPANOL 3.6 Clays 5.0 Ethanolamine 3.3 3.3 8.0 9.5 4.5 Ketoglutaric acid 10.0 10.0 10.0 10.0 10.0 10.0 Arginine 3.0 3.0 Thiosalicylic acid 5.0 5.0 5.0 5.0 5.0 5.0 Non-ionic surfactants 1.5 1.5 1.5 1.5 1.5 1.5 Fragrance 1.0 1.0 Solvents (water and non-aqueous solvents) Qs per 100 Qs per 100 Qs per 100 Qs per 100 Qs per 100 Qs per 100

[0131] Table IB shows the ingredients of two commercially available hair color remover compositions, C2 and C3, the ingredients being listed on the packaging. Composition C2 was prepared by mixing parts A and B in a 1:10 ratio (A:B), as specified on the packaging instructions. Composition C3 was prepared by mixing the contents of the package with 4 ounces of water at room temperature and shaking, as specified on the packaging instructions.

[0132] [Table 3] TABLE IB - Commercial Hair Colour Eliminators C2 - Ingredients listed on the packaging Part A Ascorbic acid, cysteine, methylhydroxyethylcellulose, magnesium sulfate, mineral oil Part B Water, citric acid, ketoglutaric acid, PEG-12 dimethicone, sodium hydroxypropyl ...

[0133] Example 2 - Evaluation of color removal

[0134] The following studies were carried out to evaluate the colour removal efficiency of the compositions according to the disclosure.

[0135] Example 2A - Disposal of commercial hair dyes

[0136] Three sets of four strands of permed hair, ~90% gray, were colored with one of three commercially available oxidative hair dye compositions, each having different combinations of oxidative dye compounds (12 strands in total, 4 per color). The oxidative hair dye composition was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture, and the mixture of Hair dye was applied to the strands at a rate of approximately 3 grams per gram of hair. The strands were left at room temperature for about 35 minutes, rinsed, washed with a commercial shampoo, rinsed again, and left to air dry.

[0137] Once the strands were dry, three of the four strands in each set were treated as follows. One of the compositions 1E, Cl, or C2 was applied to one strand from each set at a rate of approximately 2 grams per gram of hair. After the strands had been left to process (30 minutes for strands treated with compositions 1E and Cl; 45 minutes for strands treated with composition C2, as specified on the packaging instructions) at approximately 33°C, the strands were rinsed for approximately 30 seconds, washed with a commercial shampoo, rinsed, shampooed again, rinsed again, and then blow-dried. One strand per set was not treated with a color-removing composition and served as the color control.

[0138] The color of each strand was then evaluated using the CIE L* a* b* system to assess color removal efficiency. Table 2 presents the AE values ​​for the treated strands, compared to the color control.

[0139] [Table 4] TABLE 2 - Measured AE Results WITNESS 1E Cl C2 Set 1 - 46.27 45.11 45.69 Set 2 - 35.51 28.07 46.40 Set 3 - 2.59 11.19 17.54

[0140] The results in Table 2 demonstrate that oxidative hair dye can be effectively removed with the compositions as disclosed. The difference in AE for hair treated with compositions 1E, Cl, and C2 in Set 1 is considered statistically insignificant, meaning that each of the color-removing compositions performed at the same level. Although the difference in AE for hair treated with composition 1E in Set 2 was lower than that for hair treated with composition C2, it was higher than that for hair treated with composition Cl, indicating that thiosalicylic acid is a more effective hair color remover than thiolactic acid for certain oxidative hair dyes. Finally, in Set 3, each of the AE values ​​was significantly lower than that measured for Sets 1–2.This indicated that the combination of oxidative dye compounds used in the dyeing process is particularly resistant to removal. color. However, given that an AE difference of ~2 is visible to the naked eye, the composition 1E according to the disclosure nevertheless offered a visible degree of color removal. Example 2B# - Hair dye removal

[0141] To evaluate the effectiveness of the compositions according to the disclosure in removing various oxidative hair dyes, studies were conducted as follows.

[0142] The process of Example 2A was repeated with sixty-three sets of permed hair strands, ~90% gray hair (BP), and sixty-three sets of natural hair strands, ~90% gray hair (BN), each set comprising three strands (378 strands in total). For each study, three strands of BP hair and three strands of BN hair were dyed with an oxidative hair dye composition containing one of sixty-three different combinations of oxidative dye compounds. The oxidative hair dye composition was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture, and the hair dye mixture was applied to the strands at a rate of approximately 3 grams per gram of hair. The strands were left at room temperature for approximately 35 minutes, rinsed, washed with a commercial shampoo, rinsed again and left to air dry.

[0143] Once the strands were dry, two out of every three strands from each set (two strands BN and two strands BP) were treated as follows. Each of the compositions 1F or Cl was applied to one strand from each set at a rate of approximately 2 grams per gram of hair. After the strands were left to process for 30 minutes at 33°C, they were rinsed for approximately 30 seconds, washed with a commercial shampoo, rinsed again, shampooed again, rinsed again, and then blow-dried. One strand from each set was not treated with a color-removing composition and served as the color control.

[0144] The effectiveness of compositions 1F and Cl in removing hair color was evaluated as above. The results showed that both compositions were capable of removing oxidative color from both natural and permed hair strands, with composition 1F having an overall color removal effectiveness of 73% and composition Cl having an overall color removal effectiveness of 63%. Thus, thiosalicylic acid was statistically as good as, or more effective than, thiolactic acid in removing certain combinations of oxidative hair dyes for most oxidative dye compounds.

[0145] Examples 2A-2B therefore demonstrate that compositions according to the disclosure are as effective as, or more effective than, traditional thiol-based hair color removal compositions. Furthermore, compositions according to the disclosure are as effective as non-thiol-based hair color removal compositions for at least some oxidative hair dye compounds. Example 3# - Odor Control Evaluation

[0146] In accordance with the way such assessments are generally carried out, the performance of the odor control was evaluated olfactorily by a panel of perfume experts (n = 11) who assessed the odor of compositions 1E and Cl and ranked each of them according to the criteria in Table 3A.

[0147] [Table 5] TABLE 3A Odor Rating Criteria: 1 Very unpleasant and / or intense 2 Unpleasant and / or intense 3 Tolerable but somewhat unpleasant or intense 4 Good and / or light 5 Pleasant

[0148] The average results of the odor evaluation are shown in Table 3B.

[0149] [Table 6] TABLE 3B 1E Cl 4.5 <2.5

[0150] The results of each notation for composition 1E are shown in Table 3C.

[0151] [Table 7] TABLE 3C Panelist Rating Comments 1 5 Best 2 4 No thiol odor, but the fragrance matches 3 4 No thiol odor, but the fragrance could be improved 4 5 No thiol odor, but the fragrance can be replaced 5 4 No thiol odor, try a different fragrance 6 5 Other color removers should be replaced with this 7 4 Good but gives off an odor 8 5 Good 9 4 Good but distinct odor 10 4 Good with distinct odor 11 5 Good

[0152] The results presented in Tables 3B and 3C demonstrate that composition 1E had a less foul odor than composition Cl. Thus, Example 3 demonstrates that the compositions according to the disclosure have surprisingly minimal to no foul odor compared to traditional thiol-based color removal compositions.

[0153] Example 4 - Evaluation of the durability of color removal

[0154] To evaluate the color removal durability obtained using compositions according to the disclosure, studies were conducted as follows.

[0155] Eight sets of four permed hair strands, approximately 90% gray, were colored with one of two different commercially available oxidative hair dye compositions, each having different combinations of oxidative dye compounds (16 strands in total). The oxidative hair dye composition was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture, and the hair dye mixture was applied to the strands at a rate of approximately 3 grams per gram of hair. The strands were left at room temperature for approximately 35 minutes, rinsed, washed with a commercial shampoo, rinsed again, and allowed to air dry.

[0156] Once the strands were dried, seven of the eight strands in each set were treated as follows. One of the compositions 1A-1G was applied to one strand from each set at a rate of approximately 2 grams per gram of hair. After the strands were left to process for 30 minutes at 33°C, they were rinsed for approximately 30 seconds, washed with a commercial shampoo, rinsed again, shampooed again, rinsed again, and then blow-dried. One strand per set was not treated with the color-removing composition and served as the color control.

[0157] The color of each strand was then evaluated using the CIE L* a* b* system, as described above (T0). The strands were left under ambient conditions for one week, and the color was measured again (T7). Table 4 shows the AE values ​​for the treated strands, relative to the color control at T0 and T7, and Tables 4B-1 and 4B-2 show the L*, a*, and b* results at T0 and T7.

[0158] [Table 8] TABLE 4A - Measured AE Results Set 1 Set 2 TO T7 TO T7 Control - - - - IA 29.49 3.46 26.29 19.81 IB 4.28 2.08 25.85 16.44 IC 48.30 47.96 43.62 42.26 1D 47.01 46.17 35.74 34.96 1E 46.27 43.70 35.51 37.80 1F 46.90 45.83 35.55 36.46 IG 47.74 46.07 35.24 34.36

[0159] [Table 9] TABLE 4B-1 - Results L*, a*, b* measured T0 Set 1 Set 2 L* a* b* L* a* b* IA 8.88 2.52 -2.74 39.93 26.08 23.80 IB 8.88 2.52 -2.74 37.81 23.95 25.99 IC 46.43 24.30 50.49 7.80 21.07 1D 41.87 12.50 28.44 43.78 12.36 22.29 1E 41.25 7.92 29.39 46.77 17.66 23.06 1F 4.25 47.76 28.7 47.32 17.75 20.13 IG 41.94 13.12 29.32 45.75 16.38 23.02

[0160] [Table 10] TABLE 4B-2 - Measured L*, a*, b* Results T7 Set 1 Set 2 L* a* b* L* a* b* IA 8.44 3.99 0.12 34.25 29.34 22.50 IB 7.50 2.36 -0.91 24.91 32.34 30.31 IC 47.27 23.66 8.36 20.52 1D 42.05 10.66 27.47 42.54 11.73 20.60 1E 39.76 7.08 27.29 48.53 15.32 20.50 1F 40.15 15.49 27.89 16.47 24.51 IG 39.59 11.60 30.00 45.16 16.69 21.63

[0161] The data in Table 4A demonstrate that each of the tested color-removing compositions was effective in removing oxidative hair dyes. Furthermore, although all strands demonstrated color removal durability, compositions 1C-1G, which included ketoglutaric acid, demonstrated the most significant color removal durability.

[0162] The data in Table 4B show that the compositions according to the disclosure can be used to change the color, tone and / or shade of hair in a controlled manner, by targeting specific tones or colors.

[0163] In addition, each of compositions 1A-1D and 1F-1G was considered to have enhanced olfactory advantages compared to traditional thiol-based color-eliminating compositions, similar to those of composition 1E.

[0164] Example 5 - Additional color removal studies

[0165] In order to evaluate the color removal effectiveness of additional compositions according to the disclosure, the following studies were conducted.

[0166] Using the same commercial hair dyes as those described in Example 4, the color removal efficacy of each of the 1H-1J compositions was evaluated using the same dyeing and color removal processes described in Example 4. The color of each strand was then evaluated with the CIE L* a* b* system, as described above, against the control. The results are shown in Table 5.

[0167] [Table 11] TABLE 5 - Measured AE Results Witness 1H 11 U Set 1 - 43.91 8.88 44.68 Set 2 - 28.14 10.35 30.43

[0168] As shown in Table 5, each of these additional compositions as disclosed was effective in removing oxidative hair color. Furthermore, each of the 1H-1J compositions was evaluated as having improved olfactory benefits compared to traditional thiol-based color-removing compositions, similar to those of composition 1E shown in Example 3.

[0169] Example 6 - Evaluation of hair fiber integrity

[0170] The process of removing artificial hair color is known to damage hair. In order to evaluate the integrity of hair treated with color-removing compositions according to the disclosure, the following studies were conducted.

[0171] Two separate studies were conducted. In each study, permed hair strands, approximately 90% gray, were colored with a commercially available oxidative hair dye composition. The oxidative hair dye composition was mixed in a 1:1 ratio with 20V hydrogen peroxide developer to form a hair dye mixture, and the hair dye mixture was applied to the strands at a rate of approximately 3 grams per gram of hair. The strands were left to process at room temperature for approximately 35 minutes, rinsed, washed with a commercial shampoo, and rinsed again. The strands were then subjected to five additional shampoo / rinse cycles and allowed to air dry.

[0172] Once the strands were dry, all but one of the dyed strands in each study were treated as follows. Each of the compositions 1F, Cl, C2, or C3 was applied to one strand in each study at a rate of approximately 2 grams per gram of hair. After the strands had been left in treatment (30 minutes for strands treated with compositions 1F and Cl; 45 minutes for strands treated with compositions C2 and C3, as specified on the packaging instructions) at approximately 33°C, the strands were rinsed for approximately 30 seconds, washed with a commercial shampoo, rinsed again, shampooed again, and rinsed again. One dyed strand in each study was not treated with a color-removing composition and served as the control.

[0173] After rinsing the strands, hair integrity was assessed by measuring the tensile strength and modulus of elasticity of the hair fibers using a Dia-Stron Mini Tensile Tester (MTT) (wet, 50 fibers from each strand). Tensile strength measures the force / area required to break the hair fiber. The higher the tensile strength, the stronger the fiber. The modulus of elasticity provides information about the elasticity of the hair; hair that is more elastic (higher modulus of elasticity) is healthier and more likely to return to its natural state if stretched. When assessing the overall integrity of hair fibers, it is common to examine these two indicators in combination, for example, to find the most balanced result.

[0174] The tensile strength and modulus of elasticity values ​​for each strand are shown in Figures 1 (Study 1) and 2 (Study 2). In Figures 1 and 2, the upper right corner of the graph represents the hairs with the greatest fiber integrity, i.e., those with higher tensile strength and modulus of elasticity values. In each study, one strand was not dyed or treated with a color-removing composition and was used as a reference.

[0175] Based on the results for the tensile strength and the modulus of elasticity shown in Figures 1 and 2, Table 6 provides average p-values ​​for the comparisons of breaking stress and modulus of elasticity results between different pairs of strands treated either with a color removal composition as disclosed, or with a comparative color removal composition.

[0176] [Table 12] TABLE 6 - Comparative tensile strength and modulus of elasticity: p-value Comparison: Tensile Strength, Modulus of Elasticity 1 1F Control 0.8715 0.0114 2 1F Cl 0.0001 0.8320 3 1F C2 0.2308 0.0001 4 1F C3 0.3568 0.0669

[0177] The results of these studies confirm that hair dyed with an oxidative hair dye and subsequently treated with the 1F color removal composition as disclosed demonstrated improved integrity indicators compared to traditional hair color removal compositions. These results were unexpected.

[0178] As shown in [Fig. 1], in the first study, hair treated with composition 1F was stronger than the control or hair treated with composition C1, and was more elastic than the control or hair treated with compositions C1, C2, or C3. In this study, the integrity of hair treated with composition 1F was closest to the reference for all strands, demonstrating that the compositions as disclosed minimize hair damage typically associated with hair color removal.

[0179] Similarly, as seen in [Fig. 2], in the second study, hair treated with composition 1F was stronger than the control or hair treated with composition Cl, and was more elastic than hair treated with compositions Cl, C2, or C3. Study 2 thus further confirms that hair treated with color-removing compositions as disclosed leaves hair with the most balanced strength and elasticity properties compared to traditional hair color-removing compositions.

[0180] The data in Table 6 show that the integrity indicators studied were not only remarkably improved for hair treated with composition 1F, but that in each comparison, there was at least one result that had some degree of statistical significance. In particular, even when the result did not show a statistically significant improvement, all results comparing composition 1F to compositions C1-C3 were nevertheless improved.

[0181] The results of Example 6, in combination with the results of the preceding examples, demonstrate that the color-removing compositions disclosed effectively remove artificial hair color, while minimizing the odor and hair damage observed with traditional hair color removal compositions and processes. These results are surprising because it was not previously known that thiosalicylic acid was useful as a hair color-removing agent, or that it would provide additional benefits such as reduced odor or damage. Example#?# - Additional Compositions

[0182] Compositions 2A-2D can also be prepared as shown in Table 7, and are also expected to offer similar benefits in terms of hair colour removal, odor reduction and damage reduction.

[0183] [Table 13] TABLE 7 2A 2B 2C 2D Thiosalicylic Acid 4.0 5.0 2.0 8.5 Arginine 2.5 1.0 1.5 Betaine 1.9 1.6 Proline 0.5 Xanthan Gum 0.7 0.7 Hydroxypropyl Cellulose 1.5 1.0 Bentonite 5.0 Kaolin 3.0 Ethanolamine 3.7 1.0 Glycolic Acid 2.5 1.0 Sodium Lauryl Sulfate 5.0 5.0 Sodium Lauroyl Methyl Isethionate 2.5 7.5 Citric Acid 5.0 Glycoxylic Acid 12.0 Ketoglutaric Acid 10.0 2.0 FATTY COMPOUNDS (silicone oils or vegetable oils) 1.5 5.0 ADDITIVES (fragrances, pH adjusters, vitamins, plant extracts, preservatives, etc.) <5 <5 <5 <5 Solvents Qs per 1 Qs per 1 Qs per 1 Qs per 1 (water and non-aqueous solvents) 00 00 00 00

[0184] The above examples demonstrate that the compositions and processes according to the disclosure effectively remove various oxidative hair dyes from hair, making it possible to change the color, tone and / or shade of hair in a controlled manner, while minimizing or remarkably reducing the unpleasant odor associated with the process.

[0185] These compositions and processes are unique in that they can offer a targeted method for removing hair color to provide consumers with choices of resulting color, even without the need for color touch-ups to achieve the desired result. The compositions and processes can be particularly useful when a similar tone, rather than an entirely different hair color, is desired, as demonstrated by the data in the Examples above.

[0186] Moreover, the Examples show that the compositions and processes are particularly useful for removing darker colors, which tend to be more difficult to remove with color-removing agents that are not oxidizing agents.

Claims

Demands

1. A hair color modification process, the process comprising applying to the hair a composition comprising: a) at least one color-removing agent selected from thiosalicylic acid and / or its salts; b) at least one solvent; c) optionally at least one organic acid and / or its salt; and d) optionally at least one color-removing agent other than thiosalicylic acid and its salts.

2. A process according to claim 1, wherein the composition comprises a total amount of (a) thiosalicylic acid and its salts ranging from 0.5% to 20%, preferably from 1% to 18%, more preferably from 2% to 15%, most preferably from 2% to 10% by weight, relative to the total weight of the composition.

3. A process according to claim 1 or claim 2, wherein the composition comprises (c) at least one organic acid selected from ketoacids and their salts, wherein the total amount of ketoacids and their salts ranges from 0.1% to 20%, preferably from 1% to 20%, more preferably from 3% to 15%, and most preferably from 5% to 15% by weight, relative to the total weight of the composition.

4. A method according to any one of claims 1 to 3, wherein the composition further comprises at least one additional component selected from surfactants, clays, fatty compounds, amino acids and / or their salts, aminosulfonic acids and / or their salts, organic amine compounds, or combinations of two or more of these.

5. A method according to any one of claims 1 to 4, wherein the composition is left on the hair for a period of time from 1 minute to 60 minutes, preferably from 2 minutes to 50 minutes, more preferably from 5 minutes to 45 minutes, most preferably from 10 minutes to 40 minutes, and then rinsed from the hair.

6. A method according to any one of claims 1 to 5, wherein the hair to which the composition has been applied is heated to a temperature ranging from 27°C to 90°C, preferably from 30°C to 80°C, more preferably from 35°C to 70°C, most preferably from 40°C to 50°C.

7. A process according to any one of claims 1 to 6, wherein the composition comprises: a) at least one color-removing agent selected from thiosalicylic acid and / or its salts; b) water; c) optionally at least one keto acid and / or one of its salts; d) optionally at least one color-removing agent other than thiosalicylic acid and its salts; and e) at least one additional compound selected from clays, surfactants, fatty compounds, thickening agents, carboxylic acids and / or their salts, amino acids and / or their salts, aminosulfonic acids and / or their salts, organic amine compounds, or combinations of two or more of these, wherein the total amount of thiosalicylic acid and its salts ranges from 1% to 15% by weight, relative to the total weight of the composition, and wherein the pH of the composition ranges from 1 to 6.

8. Hair colour modification composition comprising: a) at least one colour-removing agent selected from thiosalicylic acid and / or its salts; b) at least one solvent; c) optionally at least one organic acid and / or one of its salts; d) optionally at least one colour-removing agent other than thiosalicylic acid and its salts;and e) at least one additional compound selected from clays, surfactants, fatty compounds, thickening agents, organic acids and / or their salts, amino acids and / or their salts, aminosulfonic acids and / or their salts, organic amine compounds, or combinations of two or more of these, wherein the total amount of (a) color-removing agents selected from thiosalicylic acid and its salts ranges from 0.5% to 20%, preferably from 1% to 18%, more preferably from 2% to 15%, most preferably from 2% to 10% by weight, relative to the total weight of the composition.;

9. Hair color modification composition according to claim 8, comprising (c) at least one selected organic acid

10. among ketoacids and their salts, wherein the total quantity of ketoacids and their salts ranges from 0.1% to 20%, preferably from 1% to 20%, more preferably from 3% to 15%, most preferably from 5% to 15% by weight, relative to the total weight of the composition. Hair color modification composition according to claim 8 or claim 9, comprising: a) at least one color-removing agent selected from thiosalicylic acid and / or its salts; b) water; c) at least one keto acid and / or one of its salts; d) optionally at least one color-removing agent other than thiosalicylic acid and its salts; and (e) at least one additional compound selected from clays, surfactants, fatty compounds, thickening agents, organic acids and / or their salts, amino acids and / or their salts, aminosulfonic acids and / or their salts, organic amine compounds, or combinations of two or more of these, wherein the total amount of (a) color-removing agents selected from thiosalicylic acid and its salts is from 2% to 10% by weight, relative to the total weight of the composition, and wherein the pH of the composition is from 1 to 6.

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