Hair care composition, method for imparting improved curl retention to hair, and method for treating hair.

A hair care composition with organic acids, hydroxyl compounds, amino acids, and plant resins penetrates hair fibers to provide long-lasting curl fixation and frizz control, addressing the limitations of existing products by maintaining curl shape and volume without a heavy or unnatural appearance.

JP7871372B2Active Publication Date: 2026-06-08LOREAL SA

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
LOREAL SA
Filing Date
2021-09-30
Publication Date
2026-06-08

AI Technical Summary

Technical Problem

Existing hair care products for curly hair fail to provide long-lasting curl fixation, require frequent reapplication, and result in a heavy, unnatural appearance due to accumulation on the hair surface.

Method used

A hair care composition comprising organic acids, compounds with hydroxyl groups, amino acids, and plant resins, which penetrate hair fibers without accumulating on the surface, providing long-lasting curl fixation, frizz control, and a natural look.

Benefits of technology

The composition achieves improved curl retention and frizz control, maintaining curl shape and volume without the need for frequent reapplication, while ensuring a light and natural appearance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention is directed to a hair care composition comprising at least one organic acid, at least one compound having at least one hydroxyl group, at least one amino acid, at least one plant resin, and water.The present invention also relates to a method for treating hair, particularly curly hair.
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Description

Technical Field

[0001] The present invention relates to a hair care composition comprising at least one organic acid, at least one compound having at least one hydroxyl group, at least one amino acid, at least one plant resin, and water. The present invention also relates to a method for treating hair, particularly curly hair.

Background Art

[0002] People have used several cosmetic compositions and personal care compositions to enhance the appearance and feel of keratin fibers, such as hair.

[0003] Particularly with respect to curly hair, consumers are constantly dealing with problems related to curl fixation, such as shrinkage, volume, and shape. Curly hair, above all, tends to shrink and significantly expand in volume when exposed to humid conditions or chemical treatments. In addition, the curl shape and fixation are lost after sleep.

[0004] Many attempts have been made to develop products for cultivating, fixing, and controlling hair, particularly curly hair, to enhance / maintain curl fixation, curl retention, and curl regularity without leaving a hair feel and / or without looking unnatural and stiff. However, such products have presented further problems or difficulties in maintenance.

[0005] For example, state-of-the-art products usually require a large amount of product to provide good combability and hair feel. However, considering that the effects of such products do not last long, consumers reapply the product several times during the day or after sleep to regain fixation and shrinkage control, resulting in a build-up of the product on the hair surface, leading to a heavy appearance, a wet look, an unnatural touch, and a sticky perception, because such products do not penetrate the keratin fibers and remain on the hair fibers.

Summary of the Invention

[0006] In this sense, there is a market need for a curling hair product that provides lasting curl hold, eliminates the need to reapply the product between washes or after going to bed, and reduces the need to use large amounts of product between washes. [Means for solving the problem]

[0007] Therefore, based on this market need, the inventors of the present invention have surprisingly and unexpectedly achieved a hair care composition comprising (a) at least one organic acid, (b) at least one compound having at least one hydroxyl group, (c) at least one amino acid, (d) at least one plant resin, and (e) water, which can penetrate hair fibers without accumulating on the surface of the fibers, while also providing curl fixation until the next wash, and providing long-lasting curl fixation, frizz control, a natural look and desired volume, and does not appear heavy on the hair.

[0008] The present invention relates to a hair care composition comprising (a) at least one organic acid, (b) at least one compound having at least one hydroxyl group, (c) at least one amino acid, (d) at least one plant resin, and (e) water, which can penetrate hair fibers without accumulating on the surface of the fibers, while also providing curl fixation until the next wash, providing long-lasting curl fixation, frizz control, a natural look and desired volume, and a light appearance on the hair.

[0009] Furthermore, the present invention relates to a method for imparting improved curl retention to hair. [Brief explanation of the drawing]

[0010] [Figure 1] Regarding the results of comparative study 1. [Figure 2] The results of comparative study 2 are clearly stated. [Figure 3] The results of the pH analysis test will be clearly stated. [Modes for carrying out the invention]

[0011] The present invention relates to a hair care composition mainly for curly hair, (a) at least one organic acid, (b) at least one compound having at least one hydroxyl group, (c) at least one amino acid, (d) at least one plant resin, (e) water and This applies to compositions containing [the specified substance].

[0012] In one embodiment, at least one organic acid is selected from short-chain organic acids, preferably from α-hydroxy acids (AHAs), beta-hydroxy acids, and mixtures thereof. In one embodiment, at least one organic acid in the hair care composition of the present invention is selected from tartaric acid, lactic acid, glutaric acid, etidronic acid, salicylic acid, glycolic acid, and mixtures thereof.

[0013] Furthermore, the amount of at least one organic acid is in the range of about 0.5% to about 8.0% by mass, preferably about 1.0% to about 7.0% by mass, more preferably about 2.0% to about 6.0% by mass, even more preferably about 2.5% to about 4.0% by mass, and most preferably about 3.0% to about 4.0% by mass, based on the total mass of the composition.

[0014] The hair care composition according to the present invention also comprises at least one compound having at least one hydroxyl group. Although not limited to any one theory, it is believed that the at least one compound having at least one hydroxyl group acts as a penetrating agent, i.e., a compound capable of forming dipole-dipole interactions with keratin fibers, such as hair, binding to polar sites on the surface of the keratin fibers, reducing shielding, and thus promoting the penetration of the hair care composition into the keratin fibers.

[0015] In one embodiment, the hair care composition of the present invention includes at least one compound having at least one hydroxyl group, which is selected from polyols, C2-C6 monoalcohols, and mixtures thereof.

[0016] In one embodiment, at least one compound having at least one hydroxyl group in the hair care composition of the present invention is selected from polyols. In one embodiment, the polyol is a glycol selected from propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, glycerin, and mixtures thereof. In one embodiment, the polyol comprises propylene glycol and dipropylene glycol. In one embodiment, the polyol is glycerin.

[0017] In one embodiment, the hair care composition of the present invention includes at least one compound having at least one hydroxyl group, which is selected from C2-C6 monoalcohols. In one embodiment, examples of C2-C6 monoalcohols include ethanol and / or propanol and / or butanol and / or hexanol.

[0018] In one embodiment, the hair care composition of the present invention comprises a mixture of a polyol and a C2-C6 monoalcohol, at least one compound having at least one hydroxyl group. In one embodiment, the hair care composition of the present invention comprises propylene glycol and ethanol. In one embodiment, the hair care composition of the present invention comprises dipropylene glycol and ethanol. In one embodiment, the hair care composition of the present invention comprises glycerin and ethanol.

[0019] The amount of at least one compound having at least one hydroxyl group is in the range of about 0.1% to about 20.0% by mass, preferably about 0.3% to about 15.0% by mass, or about 0.5% to about 12.0% by mass, or about 0.5% to about 11.0% by mass, or about 1.0% to about 11.0% by mass, based on the total mass of the composition.

[0020] According to the present invention, at least one amino acid is selected from arginine.

[0021] The amount of at least one amino acid is in the range of about 0.1% to about 7.0% by mass, preferably about 0.1% to about 6.0% by mass, more preferably about 0.1% to about 5.0% by mass, still more preferably about 0.5% to about 3.0% by mass, based on the total mass of the composition. Other preferred ranges are about 0.5% to about 2.0% by mass or about 0.7% to about 1.2% by mass based on the total mass of the composition.

[0022] In one embodiment, at least one plant resin is selected from Copaiba officinalis (balsam copaiba) resin (in the form of oleoresin or resin).

[0023] The amount of at least one plant resin is in the range of about 0.1% to about 7.0% by mass, preferably about 0.1% to about 5.0% by mass, preferably about 0.15% to about 4.0% by mass, preferably about 0.17% to about 4.0% by mass, or, for example, in the range of about 0.1, about 0.17, about 0.2, about 0.3, about 0.36, about 0.4, about 0.5 to about 4.0% by mass, based on the total mass of the composition.

[0024] In a preferred embodiment, the hair care composition according to the present invention further comprises at least one plant resin in an amount ranging from about 0.1% to about 7.0% by mass, preferably about 0.1% to about 6.0% by mass, preferably about 0.15% to about 5.0% by mass, preferably about 0.15% to about 4.8% by mass, or, for example, about 0.1, about 0.2, about 0.3, about 0.36, about 0.4, about 0.5 to about 4.8% by mass, based on the total mass of the composition.

[0025] organic acid At least one organic acid in the composition may be selected from alpha hydroxy acids, beta hydroxy acids, and mixtures thereof.

[0026] The term "alpha-hydroxy acid" is understood, according to the present invention, to mean a carboxylic acid (a carbon adjacent to the carboxylic acid functional group) having at least one hydroxyl functional group occupying the alpha position on the acid. Beta-hydroxy acids are similar to alpha-hydroxy acids, except that the carboxylic acid and hydroxyl functional group are separated by two carbon atoms. Hydroxy acids can be present in the final composition in the form of a free acid and / or in one of the forms of a salt (specifically with an organic base or alkali metal) associated with it, depending on the final pH given to the composition.

[0027] Alpha hydroxy acids present in the composition include, according to this disclosure, one or more of the following: tartaric acid, glycolic acid, citric acid, lactic acid, methyllactic acid, glucuronic acid, pyruvate, 2-hydroxybutanoic acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic acid, 2-hydroxyheptanoic acid, 2-hydroxyoctanoic acid, 2-hydroxynonanoic acid, 2-hydroxydecanoic acid, 2-hydroxyundecanoic acid, 2-hydroxydodecanoic acid, 2-hydroxytetradecanoic acid, 2-hydroxyhexadecanoic acid, 2-hydroxyoctadecanoic acid, 2-hydroxytetracosanoic acid, 2-hydroxyeicosanoic acid, mandelic acid, phenyllactic acid, gluconic acid, galacturonic acid, aloylitic acid, ribonic acid, tartonic acid, malic acid, fumaric acid, their salts, and mixtures thereof. It is also possible to use mixtures of these diverse acids.

[0028] In some embodiments, the composition comprises glycolic acid and an alpha hydroxy acid comprising one or more of citric acid and lactic acid. When combined, more than one alpha hydroxy acid may be present in equal or different amounts.

[0029] Beta-hydroxy acids, when present in the compositions according to this disclosure, include, but are not limited to, one or more of salicylic acid and its derivatives (including 5-n-octanoylsalicylic acid, salicylate, sodium salicylate, and willow extract), beta-hydroxybutanoic acid, tropic acid, and tretocanic acid.

[0030] In some embodiments, the composition contains tartaric acid.

[0031] Compounds having at least one hydroxyl group The compound having at least one hydroxyl group can be selected from polyols and / or C2-C6 monoalcohols, such as ethyl alcohol, isopropyl alcohol, propyl alcohol, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, propanediol, and glycerin.

[0032] Further non-limiting examples include alkanediols (polyhydric alcohols), 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, isopropanol, and mixtures thereof.

[0033] In some cases, the compound having at least one hydroxyl group can be selected from the group consisting of one or more glycols, C1-C4 alcohols, glycerin, and mixtures thereof. In some cases, the compound having at least one hydroxyl group can be selected from the group consisting of hexylene glycol, propylene glycol, dipropylene glycol, caprylyl glycol, glycerin, isopropyl alcohol, and mixtures thereof.

[0034] Polyhydric alcohols are useful. Examples of polyhydric alcohols include glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, 3-methyl-1,3-butanediol, 1,5-pentanediol, tetraethylene glycol, 1,6-hexanediol, 2-methyl-2,4-pentanediol, polyethylene glycol, 1,2,4-butanetriol, 1,2,6-hexanetriol, and mixtures thereof.

[0035] Polyol compounds can also be used. Non-limiting examples include aliphatic diols, such as 2-ethyl-2-methyl-1,3-propanediol, 3,3-dimethyl-1,2-butanediol, 2,2-diethyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2,4-dimethyl-2,4-pentanediol, 2,5-dimethyl-2,5-hexanediol, 5-hexen-1,2-diol, and 2-ethyl-1,3-hexanediol, as well as mixtures thereof.

[0036] amino acid The compositions according to this disclosure each contain at least one amino acid. As used herein, the term “amino acid” includes amino acids that make up proteins, aminosulfonic acids, and their salts.

[0037] Amino acids are simple organic compounds containing both a carboxylic acid group (-COOH) and an amino group (-NH2). Aminosulfonic acids are simple organic compounds containing both a sulfonic acid group (-SO2OH) and an amino group (-NH2). Accordingly, amino acids useful according to this disclosure are, in certain embodiments, of formulas (I) and (II): [ka] [In the formula, - R represents a hydrogen atom, a linear or branched C1-C5 alkyl group, preferably a linear C1-C5 alkyl group, and the alkyl group is hydroxyl, -C(O)-OH, -S(O)2-OH, -C(O)-O - and M + , and S(O)2-O - and M + (In the formula, M + (where is optionally substituted with at least one group selected from alkali metals, alkaline earth metals, or cationic counterions such as ammonium.) - n is either 0 or 1] The compounds can be selected from the following.

[0038] The amino acids may be in their non-ionized form (I) or (II), or in their ionized or betaine form (I') or (II'): [ka] (In the formula, R and n are as defined above.) That's fine.

[0039] One or more amino acids also have their conjugate base forms (Ib) and (IIb): [ka] (In the formula, R and n are as defined above.) That's fine.

[0040] Well-known amino acids include 20 amino acids that form proteins in living organic matter (standard protein-constituting amino acids): alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine. However, the amino acids of this disclosure are not limited to standard protein-constituting amino acids.

[0041] Non-limiting 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, aminohexylbenzenesulfonic acid, and mixtures thereof.

[0042] In some cases, charged amino acids can be used. Non-limiting examples of charged amino acids include arginine, lysine, aspartic acid, and glutamic acid. In some cases, polar amino acids are useful. Non-limiting examples of polar amino acids include glutamine, asparagine, histidine, serine, threonine, tyrosine, cysteine, methionine, and tryptophan.

[0043] In some cases, hydrophobic amino acids can be used. Non-limiting examples of hydrophobic amino acids include alanine, isoleucine, leucine, phenylalanine, valine, proline, and glycine.

[0044] plant resin Preferably, at least one plant-based component of the present invention is Copaifera officinalis (balsam copaiba) resin (INCI name), which may be in the form of copaiba oil resin or copaiba resin. Copaifera officinalis (balsam copaiba) resin is commercially available under the trade names RAIN FOREST RF3310 (also known by the chemical name of copaiba oleo resin) or RAIN FOREST 03370 (also known by the chemical name of copaiba resin), both manufactured by the supplier Beraca Ingredientes Naturais.

[0045] vegetable oil In non-limiting and preferred embodiments, the hair care composition of the present invention further comprises at least one vegetable oil, which may be coconut oil, almond oil, aloe vera oil, avocado oil, camelina oil, coffee oil, castor oil, grape seed oil, jojoba oil, basil oil, bay oil, bergamot oil, black pepper essential oil, birch oil, camphor, hemp oil, caraway oil, cardamom seed oil, carrot seed oil, chamomile oil, calamus root oil, cinnamon oil, citronella oil, clary sage, clove leaf oil, coffee, coriander, costumary oil, cranberry seed oil, cinnamon oil, dill oil, eucalyptus oil, fennel seed oil, fenugreek oil, fir, fruticans. Selected from lanquin oil, geranium oil, ginger oil, grapefruit oil, henna oil, horseradish oil, jasmine oil, juniper berry oil, lavender oil, lemon oil, lemongrass, marjoram, melaleuca, lemon balm oil, mountain savory, mugwort oil, mustard oil, sorghum oil, myrtle oil, lilac oil, neroli, nutmeg, orange oil, oregano oil, orris oil, palo santo, parsley oil, peppermint oil, pine oil, plum oil, rose oil, rosehip oil, rosemary oil, rosewood oil, sandalwood oil, spruce oil, star anise oil, tarragon oil, tea tree oil, thyme oil, and mixtures thereof.

[0046] In some embodiments, suitable vegetable oils for use in the hair care compositions of the present invention can be selected from coconut oil, soybean oil, canola oil, rapeseed oil, corn oil, cottonseed oil, olive oil, palm oil, peanut oil, safflower oil, sesame oil, sunflower oil, linseed oil, palm kernel oil, wheat germ oil, apricot kernel oil, pistachio oil, poppy oil, hazelnut oil, rapeseed oil, juniper oil, peach kernel oil, jojoba oil, Helianthus annuus (sunflower) seed oil, and mixtures thereof.

[0047] When present, vegetable oil can improve penetration.

[0048] In a preferred embodiment, at least one plant-based component of the present invention is coconut oil, which is mainly composed of lauric acid, myristic acid, palmitic acid, oleic acid, caprylic acid, and capric acid. Other oils having the same composition can be applied to the present invention, such as babassu oil and murumuru fat.

[0049] In preferred embodiments, the hair care composition of the present invention comprises a mixture of a plant oil and a plant resin, for example, a mixture of coconut oil and copaiba officinalis (balsam copaiba resin) (copaiba resin or copaiba oleo resin).

[0050] The pH of the hair care composition of the present invention is about 1 to about 10, preferably about 2 to about 7, or about 2 to about 6. To achieve long-lasting fixation, the pH is about 3 to about 5, preferably about 2.5 to about 4.5, or about 3.5 to about 4.5, or about 2, about 3, about 3.3, about 3.5, about 4, or about 4.5.

[0051] In preferred embodiments, the compositions of the present invention are used as leave-on or rinse-off products to control frizz, and among other attributes, improve curl fixation, curl regularity, and controllability.

[0052] In one preferred embodiment, the hair care composition of the present invention comprises: (a) at least one organic acid selected from tartaric acid, glutaric acid, etidronic acid, salicylic acid, and mixtures thereof, in an amount of approximately 0.5% to approximately 8.0% by mass, (b) at least one compound having at least one hydroxyl group, selected from polyols, C2-C6 monoalcohols, and mixtures thereof, in an amount of about 0.1% by mass to about 20.0% by mass, (c) Arginine in an amount of approximately 0.1% to 7.0% by mass, (d) At least one plant resin in an amount of approximately 0.1% to approximately 7.0% by mass, (e) Water.

[0053] Another preferred embodiment of the hair care composition of the present invention includes: (a) at least one organic acid selected from tartaric acid, glutaric acid, etidronic acid, salicylic acid, and mixtures thereof, in an amount of approximately 0.5% to approximately 8.0% by mass, (b) at least one compound having at least one hydroxyl group, selected from propylene glycol, C2-C6 monoalcohols, and mixtures thereof, in an amount of about 0.1% by mass to about 20.0% by mass, (c) Arginine in an amount of approximately 0.1% to 7.0% by mass, (d) At least one plant resin selected from Copaiba officinalis (balsam copaiba) resin in an amount of approximately 0.1% by mass to approximately 7.0% by mass, (e) Water and, (f) At least one vegetable oil selected from coconut oil, in an amount of approximately 1.0% by mass to approximately 5.0% by mass.

[0054] Furthermore, the present invention relates to a method for imparting improved curl retention to hair, wherein the method includes contacting the hair with the hair care cosmetic composition of the present invention.

[0055] The hair care composition of the present invention can be manufactured using conventional cosmetic methods. An exemplary method includes the following steps: - Step (1): Add 50% to 70% water and at least one organic acid to a container and mix at room temperature for about 10 minutes. - Step (2): Add at least one amino acid and mix the ingredients until completely dissolved. - Step (4): Add at least one compound having at least one hydroxyl group, at least one plant resin, and an optional vegetable oil, and heat to about 65°C to about 75°C for about 15 minutes. - Step (5): Add the remaining water to the mixture and cool it. - Step (6): Add any additional ingredients (if any), cool to approximately 25°C, and adjust the pH with a pH adjuster (if necessary).

[0056] term As used herein, the expression "at least one" means one or more, and therefore includes individual components as well as mixtures / combinations.

[0057] Except in the operating examples or unless otherwise indicated, all numbers representing the quantities of components and / or reaction conditions should be understood in all cases to be modified by the term “approximately,” meaning within + / - 5% of the indicated number.

[0058] When used herein, all ranges provided are meant to include all specific ranges within a given range, and combinations of subranges between given ranges. Therefore, the range 1–5 specifically includes 1, 2, 3, 4, and 5, as well as subranges such as 2–5, 3–5, 2–3, 2–4, and 1–4. All ranges and values ​​disclosed herein are inclusive and combinable. For example, any value or point disclosed herein that falls within a range described herein can act as a minimum or maximum value that induces a subrange.

[0059] water The hair care cosmetic composition according to the present invention contains water. The water used may be sterile desalinated water and / or deionized water and / or floral water, such as rose water, cornflower water, chamomile water, or lime water, and / or natural thermal water or mineral water, such as Vittel water, Vichy Basin water, Uriage water, La Roche-Posay water, Labrebourg water, Enghien-les-Bains water, Saint-Gervais-les-Bains water, Nery-les-Bains water, Albard-les-Bains water, Digne water, Mézières water, Neyrac-les-Bains water, Longs-Roussaunier water, Au Bonne water, Rochefort water, Saint-Christo water, L'Efumade water, Terci-les-Bains water, or Avène water. The water may also contain reconstituted thermal water, i.e., water containing trace elements such as zinc, copper, and magnesium that reconstitute the characteristics of thermal water.

[0060] The hair care cosmetic composition according to the present invention may contain water in an amount ranging from about 50% to about 99% by mass, preferably about 65% to about 95% by mass, and most preferably about 70% to about 92% by mass, based on the total mass of the hair care cosmetic composition.

[0061] Additional ingredients In addition to the essential components previously described herein, the hair care compositions of the present invention may further contain any ordinary, cosmetic-acceptable components, which may be selected from cosmetic-acceptable components, particularly perfumes / fragrances, preservatives, vitamins, plant extracts, pH adjusters, organic solvents, and mixtures thereof.

[0062] Those skilled in the art will carefully select optional additional components and / or their amounts so that the advantageous properties of the composition according to the present invention are not adversely affected or substantially affected by the anticipated additions.

[0063] The additional components may constitute approximately 1% to 70% by mass, based on the total mass of the composition.

[0064] Through non-limiting examples, the present invention will now be described with reference to the following embodiments. [Examples]

[0065] (Examples 1-4) Examples 1 to 4 below are examples of the hair care compositions according to the present invention:

[0066] [Table 1]

[0067] (Examples 5-8)

[0068] Other suitable hair care compositions according to the present invention are the following Examples 5 to 8:

[0069] [Table 2]

[0070] test Comparative Study 1 In vitro comparative tests were performed to evaluate curl fixation in the hair care composition obtained in Example 1 of the present invention, and in the placebo composition obtained with (a) the present invention, which contains an aqueous alcohol medium without organic acids. In Figure 1, the comparative black bars indicate the curl fixation scores after applying the compositions containing 3.0% and 6.0% tartaric acid to the hair and after touching (mimicking the normal feel of hair throughout the day), while the comparative gray bars indicate the curl fixation scores after applying the composition to the hair and combing it. The curl fixation scores in sections were obtained by image analysis.

[0071] As can be seen, compositions according to the present invention having different pH and different tartaric acid concentrations resulted in better curl retention scores than the placebo composition after touching and combing.

[0072] Comparative Study 2 Another comparative test was conducted in vitro, where curl fixation was evaluated by applying the hair care compositions according to Examples 1-4 of the present invention to hair treated with only a cleansing shampoo. Curl fixation scores in sections were obtained by image analysis.

[0073] The results can be seen in Figure 2. The horizontal dotted line represents the results after washing the hair with only cleansing shampoo.

[0074] The curl fixation scores obtained after applying the four compositions according to Examples 1-4 of the present invention were significantly superior to those obtained after washing the hair with a cleansing shampoo.

[0075] pH analysis test To evaluate the possible effects of pH on curl fixation in hair care compositions, in vitro tests were performed using the composition from Example 1 with varying final pH levels. Six different pH levels—pH 2, pH 3.5, pH 4.5, pH 5, pH 6, and pH 7—were analyzed.

[0076] As can be seen from the results in Figure 3, all the hair care compositions from Example 1 with different pH values ​​showed good findings in curl fixation after application and touch, with the most favorable results obtained at pH values ​​of 3.5, 4.5, 6, and 7.

Claims

1. A hair care composition, wherein, with respect to the total mass of the composition, (a) 0.5% to 8.0% by mass of at least one organic acid selected from α-hydroxy acids (AHAs), beta-hydroxy acids, and mixtures thereof, (b) 0.1% to 20.0% by mass of glycol, glycerin, 1,2,4-butanetriol, 1,2,6-hexanetriol, C 2 ~C 6 A monoalcohol, and at least one compound having at least one hydroxyl group, selected from mixtures thereof, (c) 0.1% to 7.0% by mass of at least one amino acid, (d) At least one plant resin in an amount of 0.1% to 7.0% by mass, comprising at least one plant resin including Copaiba officinalis (balsam copaiba) resin (in the form of an oil resin or resin), (e) water and A composition containing the following:

2. The composition according to claim 1, wherein the at least one organic acid is selected from tartaric acid, lactic acid, glutaric acid, salicylic acid, glycolic acid, and mixtures thereof.

3. The composition according to claim 1, wherein the amount of the at least one organic acid is in the range of 1.0% by mass to 7.0% by mass based on the total mass of the composition.

4. The composition according to claim 1, wherein the at least one compound having at least one hydroxyl group is selected from propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, glycerin, and mixtures thereof.

5. The composition according to claim 1, wherein the amount of at least one compound having at least one hydroxyl group is 0.3% by mass to 15.0% by mass based on the total mass of the composition.

6. The composition according to claim 1, wherein the at least one amino acid is arginine.

7. The composition according to claim 1, wherein the amount of the at least one amino acid is in the range of 0.1% by mass to 6.0% by mass, based on the total mass of the composition.

8. The composition according to claim 1, wherein the amount of the at least one plant resin is in the range of 0.1% by mass to 5.0% by mass, based on the total mass of the composition.

9. The composition according to claim 1, further comprising at least one vegetable oil.

10. The composition according to claim 9, wherein the amount of the at least one vegetable oil is in the range of 0.1% by mass to 7.0% by mass, based on the total mass of the composition.

11. The composition according to claim 9, wherein the at least one vegetable oil includes coconut oil.

12. The composition according to claim 1, further comprising an ingredient acceptable as a cosmetic, selected from perfumes / fragrances, preservatives, vitamins, plant extracts, pH adjusters, organic solvents, and mixtures thereof.

13. The composition according to claim 1, wherein the pH is in the range of 2 to 7.

14. A hair care composition, wherein, with respect to the total mass of the composition, (a) 0.5% to 8.0% by mass of at least one organic acid selected from tartaric acid, lactic acid, glutaric acid, salicylic acid, glycolic acid, and mixtures thereof, (b) 0.1% to 20.0% by mass of glycol, glycerin, 1,2,4-butanetriol, 1,2,6-hexanetriol, C 2 ~C 6 A monoalcohol, and at least one compound having at least one hydroxyl group, selected from mixtures thereof, (c) 0.1% to 7.0% by mass of arginine, (d) At least one plant resin in an amount of 0.1% to 7.0% by mass, comprising at least one plant resin including Copaiba officinalis (balsam copaiba) resin (in the form of an oil resin or resin), (e) Water and, A composition containing the following:

15. The composition according to claim 14, further comprising 0.1% to 7.0% by mass of at least one vegetable oil based on the total mass of the composition.

16. A method for imparting improved curl retention to hair, comprising the step of bringing the hair into contact with a hair care cosmetic composition as defined in any one of claims 1 to 15.

17. A method for treating hair, comprising the step of bringing the hair into contact with a hair care cosmetic composition as defined in any one of claims 1 to 15.