Compositions for hair care, a process for improving the definition of hair curls, and a hair treatment process

Abstract

Hair care compositions, a method for improving curl definition, and a hair treatment method. The present invention relates to hair care compositions comprising at least one organic acid, at least one compound with at least one hydroxyl group, at least one amino acid, at least one plant resin, and water. The invention also relates to a method for treating hair, particularly curly hair. Figure for abstract: None

Description

Description Title of the invention: Compositions for hair care, a process for improving the definition of loops hair and hair treatment process FIELD OF INVENTION

[0001] = The present invention relates to hair care compositions comprising at least one organic acid, at least one compound with at least one group hydroxyl, at least one amino acid, at least one plant resin, and water. The invention also relates to a hair treatment method, in particular curly hair. context of the invention

[0002] — People use several cosmetic and personal care compositions to to improve the appearance and feel of keratinous fibers, such as hair.

[0003] — In particular, with regard to curly hair, consumers are always faced with problems related to loop definition, such as frizz, volume, and shape. Curly hair tends to become frizzy and increase considerably in volume when exposed to conditions high humidity or chemical treatments, among other things. In addition, the shape and the The definition of loops is lost after sleeping.

[0004] = Many attempts have been made to develop products enabling to discipline, define and control hair, especially curly hair, by improving / maintaining loop definition, loop retention, and regularity curls, without leaving the hair feeling and / or looking unnatural and stiff, but these products have led to additional problems or difficulties maintenance.

[0005] — For example, prior art products generally require a high quantity of product to give good combing and a good feel to the hair, but, given that the effect of these products is not lasting, the Consumers should reapply the product several times a day or after Having slept to regain definition and control of frizz, which leads to the accumulation of the product on the surface of the hair, hence a heavy, heavy appearance When wet, with an unnatural feel and a greasy sensation, since these products do not do not penetrate the keratin fibers and remain on the surface of the hair fiber.

[0006] In this sense, the market needs products for curly hair that define the curls in a lasting way, without the need to reapply the product until the next wash or after sleeping, which also reduces the need to use large quantities of product between washes. Thus, based on market needs, the inventors of the present invention have achieved, in an astonishing and unexpected way, compositions for hair care comprising (a) at least one organic acid, (b) at least one compound with at least one hydroxyl group, (c) at least one amino acid, (d) at least one vegetable resin, and (e) water, which are capable of penetrating the hair fiber without accumulating on the surface of the fiber, while also providing curl definition until the next wash, lasting curl definition, frizz control, a natural look and desirable volume, and which do not give the hair a heavy appearance. Summary of the invention The present invention relates to hair care compositions comprising (a) at least one organic acid, (b) at least one compound with at least one hydroxyl group, (c) at least one amino acid, (d) at least one vegetable resin, and (e) water, which are capable of penetrating the hair fiber without accumulating on the surface of the fiber, while also providing curl definition until the next wash, long-lasting curl definition, frizz control, a natural look and desirable volume, and which do not impart a heavy appearance or feel to the hair. The present invention also relates to a method for improving the definition of hair curls. Brief description of the drawings [Fig.1] Fig.1 presents the results of comparative test 1. [Fig.2] Fig.2 shows the results of comparative trial 2. [Fig.3] Fig.3 shows the results of the pH analysis test. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hair care composition, primarily for curly hair, comprising: (a) at least one organic acid; (b) at least one compound with at least one hydroxyl group; (c) at least one amino acid; (d) at least one vegetable resin; and (e) of water. In one embodiment, at least one organic acid is selected from short-chain organic acids, preferably β-hydroxy acids (AHAs), β-hydroxy acids, and mixtures thereof. In one embodiment, at least one organic acid is selected from the hair care composition of the present invention is chosen from tartaric acid, lactic acid, glutaric acid, etidronic acid, salicylic acid, glycolic acid, and mixtures thereof. In addition, the amount of at least one organic acid ranges from about 0.5% to about 8.0% by weight, preferably from about 1.0% to about 7.0% by weight, more preferably from about 2.0% to about 6.0% by weight, even more preferably from about 2.5% to about 4.0% by weight, and most preferably from about 3.0% to about 4.0% by weight, relative to the total weight of the composition. The hair care composition according to the present invention also comprises at least one compound with at least one hydroxyl group. Without being limited to any theory, it is believed that the at least one compound with at least one hydroxyl group acts as a penetration agent, that is, a compound capable of forming dipole-dipole interactions with keratinous fibers, such as hair, and of binding to polar sites on the surface of said keratinous fiber and reducing shielding, thereby facilitating the penetration of the hair care composition into the keratinous fibers. In one embodiment, at least one compound with at least one hydroxyl group of the hair care composition of the present invention is selected from a polyol, C1 to C5 monoalcohols, and a mixture thereof. In one embodiment, at least one compound with at least one hydroxyl group of 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. In one embodiment, at least one compound with at least one hydroxyl group of the hair care composition of the present invention is selected from monoalcohols in the C1 to C1 range. In one embodiment, the monoalcohols in the C1 to C1 range include ethanol and / or propanol and / or butanol and / or hexanol. In one embodiment, at least one compound with at least one hydroxyl group of the hair care composition of the present invention comprises a mixture of polyols and monoalcohols in the C5 to C5 range. In one embodiment, at least one compound with at least one hydroxyl group of the hair care composition of the present invention comprises propylene glycol and ethanol. In one embodiment, at least one compound with at least one hydroxyl group of the hair care composition of the present invention comprises dipropylene glycol and ethanol. In one embodiment, at least one compound with at least one hydroxyl group of the com- The hair care position of the present invention comprises glycerin and ethanol. The amount of at least one compound with at least one hydroxyl group ranges from about 0.1% to about 20.0% by weight, preferably from about 0.3% to about 15.0% by weight, or from about 0.5% to about 12.0% by weight, or from about 0.5% to about 11.0% by weight, or from about 1.0% to about 11.0% by weight, relative to the total weight of the composition. According to the present invention, at least one amino acid is selected from arginine. The amount of this amino acid ranges from approximately 0.1% to approximately 7.0% by weight, preferably from approximately 0.1% to approximately 6.0% by weight, more preferably from approximately 0.1% to approximately 5.0% by weight, and even more preferably from approximately 0.5% to approximately 3.0% by weight, relative to the total weight of the composition. Other suitable ranges are from approximately 0.5% to approximately 2.0% by weight, or from approximately 0.7% to approximately 1.2% by weight, relative to the total weight of the composition. In one embodiment, the plant resin is selected from Copaiba Officinalis resin (Copahu balsam) (oily resin or resin form).The quantity of at least one vegetable resin shall be from about 0.1% to about 7.0% by weight, preferably from about 0.1% to about 5.0% by weight, preferably from about 0.15% to about 4.0% by weight, preferably from about 0.17% to about 4.0% by weight, or such as 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 weight, relative to the total weight of the composition. In a preferred embodiment, the hair care composition according to the present invention further comprises at least one vegetable oil, in an amount from about 0.1% to about 7.0% by weight, preferably from about 0.1% to about 6.0% by weight, preferably from about 0.15% to about 5.0% by weight, preferably from about 0.15% to about 4.8% by weight, or such as about 0.1%, about 0.2%, about 0.3%, about 0.36%, about 0.4%, about 0.5% to about 4.8% by weight, based on the total weight of the composition. Organic acid At least one organic acid in the compositions may be chosen from alpha-hydroxy acids, beta-hydroxy acids and a mixture thereof. According to the present invention, "alpha-hydroxy acid" means a carboxylic acid having at least one hydroxyl functional group occupying an alpha position on said acid (carbon adjacent to a carboxylic acid functional group). A beta-hydroxy acid is closely related to an alpha-hydroxy acid, except that the carboxyl and hydroxyl functional groups are separated by two carbon atoms. A hydroxy acid may be present in the final composition in the form of the free acid and / or in the form of one of its associated salts (salts with an organic base or an alkali metal, in particular), especially depending on the final pH imposed on the composition. The alpha-hydroxy acid present in the composition, according to the disclosure, includes, but is not limited to, one or more of the following acids: tartaric acid, glycolic acid, citric acid, lactic acid, methyllactic acid, glucuronic acid, pyruvic acid, 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, aleuritic acid, ribonic acid, tartronic acid, malic acid, fumaric acid, their salts and mixtures. It is also possible to use mixtures of these different acids. In some embodiments, the composition includes alpha-hydroxy acids comprising glycolic acid and one or more of citric acid and lactic acid. When combined, the different alpha-hydroxy acids may be present in the same or different amounts. Beta-hydroxy acid, when present in the composition as disclosed, includes, but is 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 trethocanic acid. In some embodiments, the composition includes tartaric acid. Compound with at least one hydroxyl group The compound with at least one hydroxyl group may be chosen from polyols and / or monoalcohols in C, to C; such as ethyl alcohol, isopropyl alcohol, propyl alcohol, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, propane diol and glycerin. Other 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, the 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 a mixture of these. In some cases, the compound with at least one hydroxyl group may be chosen from the group consisting of one or more glycols, C,4 alcohols, glycerin, and a mixture thereof. In some cases, the compound containing at least one hydroxyl group is chosen from the group consisting of hexylene glycol, propylene glycol, dipropylene glycol, caprylyl glycol, glycerin, isopropyl alcohol, and a mixture thereof. 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. 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-hexene-1,2-diol and 2-ethyl-1,3-hexanediol, and a mixture of these. Amino acid The compositions as disclosed include at least one amino acid. As used here, the term "amino acid" includes amino acids such as proteinogenic amino acids, aminosulfonic acids, and their salts. 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). Consequently, the amino acids useful according to the disclosure can, in certain embodiments, be selected from the compounds of formula (I) and formula (II): O Lo, HOOSTRNE, Nv po SA En, R RR {4H (in in which - R represents a hydrogen atom, a C,-C alkyl group; linear or branched, preferably linear, said alkyl group being optionally substituted by at least one group selected from hydroxyl, -C(O)-OH, -S(O),-OH, -C(O)-O- and M+, and S(O),-O- and M+, M+ representing a cationic counterion such as an alkali metal, an alkaline earth metal or an ammonium, and -nestégalà0oul. Amino acids can be in their non-ionized form (I) and (II) or in their ionized or betaine form (I) and (IT): ? 9 nat Water, =— 0 NA nn: RR {) {” 5; ; + HO Sen, = 0 SA, RR air} where R and n are as defined above. One or more amino acids can also be in their conjugated basic form (Ib) and (IIb): Mr. 0 NA Ernie Q 11.0 M* O7 SSI J0NH, RR (lb) (lb) where R and n are as defined above. The well-known amino acids include the twenty amino acids that form the proteins of living organisms (standard proteinogenic 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 in this disclosure are not limited to standard proteinogenic amino acids. Non-limiting examples of aminosulfonic acids include amino-nomethanesulfonic acid, 2-aminoethanesulfonic acid (taurine), amino-propanesulfonic acid, aminobutanesulfonic acid, aminohexanesulfonic acid, aminoisopropylsulfonic acid, aminododecylsulfonic acid, aminobenzenesulfonic acid, aminotoulenesulfonic acid, sulfanilic acid, chlorosulfanilic acid, diaminobenzenesulfonic acid, aminophenolsulfonic acid, aminopropylbenzenesulfonic acid, aminohexylbenzenesulfonic acid, and mixtures thereof. In some cases, charged amino acids can be used. Non-exhaustive examples of charged amino acids include arginine, lysine, aspartic acid, and glutamic acid. In some cases, polar amino acids are useful. Non-exhaustive examples of polar amino acids include glutamine, asparagine, histidine, serine, threonine, tyrosine, cysteine, methionine, and tryptophan. In some cases, hydrophobic amino acids may be used. Non-limiting examples of hydrophobic amino acids include alanine, isoleucine, leucine, phenylalanine, valine, proline, and glycine. Vegetable resin Preferably, at least one plant-based ingredient 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 name RAIN FOREST RF3310 (also known by the chemical name copaiba oleoresin) or under the trade name RAIN FOREST 03370 (also known by the chemical name copaiba resin), both from the supplier Beraca Ingredientes Naturais. Vegetable oil In a non-limiting and preferred embodiment, the hair care composition of the present invention further comprises at least one vegetable oil, which is selected from coconut oil, almond oil, aloe vera oil, avocado oil, camelina oil, coffee oil, castor oil, grapeseed oil, jojoba oil, basil oil, bay leaf oil, bergamot oil, black pepper essential oil, birch oil, cannabis oil, camphor oil, caraway oil, cardamom seed oil, carrot seed oil, chamomile oil, calamus root oil, cinnamon oil, lemongrass oil, and so on. clary sage, clove leaf oil, coffee oil, coriander oil, costmary oil, cranberry seed oil, cubeb oil, cumin oil, dill oil, eucalyptus oil, fennel seed oil, fenugreek oil, fir oil, frankincense oil, geranium oil, ginger oil, grapefruit oil, grapeseed oil, henna oil, horseradish oil, jasmine oil, juniper berry oil, lavender oil, lemon oil, lemongrass oil, marjoram oil, tea tree oil, lemon balm oil, mountain savory oil, mugwort oil, mustard oil, myrrh oil, myrtle oil, neem oil, neroli oil, nutmeg oil, orange oil, oregano oil, iris oil, palo santo oil, 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 blends thereof. In certain embodiments, the vegetable oils suitable for use in the hair care compositions of the present invention are selected from coconut oil, soybean oil, canola oil, rapeseed / canola 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, cade oil, peach kernel oil, jojoba oil, helianthus annuus (sunflower) seed oil, and mixtures thereof. When present, vegetable oil can improve the penetration effect. In a preferred embodiment, at least one plant-based ingredient of the present invention is coconut oil, which is primarily composed of lauric acid, myristic acid, palmitic acid, oleic acid, caprylic acid, and capric acid. Other oils having the same composition could be used in the invention, such as babassu oil and murumuru butter. In a preferred embodiment, the hair care compositions of the present invention comprise a mixture of vegetable oils and vegetable resins, such as coconut oil and Copaiba Officinalis resin (copaiba balsam resin) (copaiba resin or copaiba oleoresin). The pH of the hair care composition of the present invention is from about 1 to about 10, preferably from about 2 to about 7, or from about 2 to about 6. To obtain lasting definition, the pH is from about 3 to about 5, preferably from about 2.5 to about 4.5, or from about 3.5 to about 4.5, or from about 2, about 3, about 3.3, about 3.5, about 4, about 4.5. In a preferred embodiment, the composition of the invention is used as a leave-in or rinse-out product to control frizz, improve the de- curl finish, curl regularity and discipline, among other attributes. In a preferred embodiment, the hair care composition of the present invention comprises: (a) from about 0.5% to about 8.0% by weight of at least one organic acid selected from tartaric acid, glutaric acid, etidronic acid, salicylic acid and a mixture thereof; (b) from about 0.1% to about 20.0% by weight of at least one compound with at least one hydroxyl group selected from polyols, C5 to C5 monoalcohols, and mixtures thereof; (c) from about 0.1% to about 7.0% by weight of arginine; (d) from about 0.1% to about 7.0% by weight of at least one plant resin; and (e) of water. Another preferred embodiment of the hair care composition of the present invention includes: (a) from about 0.5% to about 8.0% by weight of at least one organic acid selected from tartaric acid, glutaric acid, etidronic acid, salicylic acid and a mixture thereof; (b) from about 0.1% to about 20.0% by weight of at least one compound with at least one hydroxyl group selected from propylene glycol, C, to Cg monoalcohols and a mixture thereof; (c) from about 0.1% to about 7.0% by weight of arginine; (d) of about 0.1% to about 7.0% by weight of at least one vegetable resin selected from Copaiba Officinalis resin (copaiba balsam); (e) water, and (f) of about 1.0% to about 5.0% by weight of at least one vegetable oil selected from coconut oil. Furthermore, the present invention relates to a method for improving the definition of hair curls, the method comprising bringing the hair into contact with the cosmetic hair care composition of the invention. The hair care composition of the present invention can be manufactured using conventional cosmetic processes. One illustrated process comprises the following steps: - step (1): in a container, add 50% to 70% of the water and at least one organic acid, and mix for about 10 minutes at room temperature; - step (2): addition of at least one amino acid, mixing of ingredients until complete dissolution; - step (4): addition of at least one compound with at least one hydroxyl group, at least one vegetable resin, and an optional vegetable oil, heating until approximately 65°C to approximately 75°C for approximately 15 minutes. - step (5): adding the remaining water to the mixture, and cooling. - Step (6): Add any additional ingredients (if present), cool to approximately 25°C, and adjust the pH (if necessary) using a pH adjuster. Terms As used here, the expression "at least one" means one or more and therefore includes individual components as well as mixtures / combinations. Except for the examples of operation, or unless otherwise indicated, all numbers expressing quantities of ingredients and / or reaction conditions should be understood as being modified in all cases by the term "approximately", i.e., at + / - 5% of the number indicated. As used here, all provided ranges are intended to include every specific range within the given ranges, as well as any combination of subranges between those ranges. Thus, a range of 1 to 5 specifically includes 1, 2, 3, 4, and 5, as well as subranges such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, and so on. All ranges and values ​​disclosed here are inclusive and combinable. For example, any value or point described here that lies within a range described here can serve as a minimum or maximum value for deriving a subrange, and so forth. Water The cosmetic compositions for hair care according to the present invention comprise water. The water used may be sterile demineralized water and / or deionized water and / or floral water such as rose water, cornflower water, chamomile water or lime water, and / or natural thermal or mineral water such as, for example: Vittel water, Vichy basin water, Uriage water, La Roche Posay water, La Bourboule water, Enghien-les-Bains water, Saint Gervais-les-Bains water, Néris-les-Bains water, Allevar-les-Bains water, Digne water, Maizières water, Neyrac-les-Bains water, Lons-le-Saunier water, Eaux-Bonnes water, Rochefort water, Saint-Christau water, water Fumades, Tercis-les-Bains water or Avène water. The water may also include reconstituted thermal water, that is to say water containing trace elements such as zinc, copper, magnesium, etc.recreating the characteristics of thermal water. The cosmetic composition for hair care according to the present invention may comprise water in an amount from about 50% to about 99% by weight, preferably from about 65% to about 95% by weight, and more preferably from about 70% to about 92% by weight, relative to the total weight of the cosmetic composition for hair care. Additional ingredients In addition to the essential components described above, the hair care composition of the present invention may further include any cosmetically acceptable common ingredient, which may be chosen in particular from among these cosmetically acceptable ingredients chosen from perfumes / fragrances, preservatives, vitamins, plant extracts, pH adjusters, organic solvents and mixtures thereof. A person skilled in the art shall ensure that the optional additional ingredients are selected and / or their quantity in such a way that the advantageous properties of the composition according to the invention are not, or are not substantially, negatively affected by the envisaged addition. Additional ingredients can represent from about 1% to about 70% by weight, relative to the total weight of the composition. By way of non-limiting illustration, the invention will now be described with reference to the following examples. EXAMPLES 1 TO 4 Suitable hair care compositions according to the present invention are examples 1 to 4, as follows: [Table 1] [INGREDIENT EX.1 EX.2 EX.3 EX.4 (%) (%) (%) (%) Propylene glycol 0.74 226 106 8.33 Arginine 2.0 2.0 2.0 2.0 [Tartaric acid 3.0 30 3.0 3.0 [Copaiba balsam resin (Copaifera |0.17 0.19 0.22 3.93 Tartaric acid, Copaiba balsam resin (Copaifera officinalis) (copaiba resin), Coconut oil (Cocos nucifera), ethanol LS co (Cocosnucifera) 4.32 0.55 QS Coconut oil (Cocos nucifera) 4.32 Eu |a53- Jo 36 [ethanol 1055 fait ji |1æ EXAMPLES 5 TO 8 Other suitable hair care compositions according to the present invention are examples 5 to 8, as follows: [Tables 2] [INGREDIENT EX.5 EX.6 EX.7 EX.8 (%) (%) (%) (%) Propylene glycol 0.74 226 -JLo6 |8.33 Arginine 20 20 20 20 Tartaric acid 3.0 3.0 3.0 3.0 [Copaiba balsam resin (Copaifera |0.17 0.19 0.22 3.93 Coconut oil (Cocos nucifera) |4.32 em _|ass— 0.36 ethanol 0.55 4.11 1.72 1.89 7 TESTS Comparative test 1 An in vitro comparative test was conducted to evaluate curl definition obtained with the hair care composition of Example 1 according to the present invention and a placebo composition comprising a hydroalcoholic medium without (a) organic acid of the present invention. In [Fig. 1], the black bars in the comparisons show the curl definition score after application of the compositions containing 3.0% and 6.0% tartaric acid to the hair and after touch (to simulate the normal feel of hair throughout the day), while the gray bars in the comparisons show the curl definition score after application of the compositions to the hair and after combing. The curl definition score on the strands was obtained by image analysis. As can be seen, the composition according to the present invention, with different pH levels and different concentrations of tartaric acid, gave better curl definition scores than the placebo composition, both after touch and after combing. Comparative Test 2 Another comparative in vitro test was conducted to evaluate curl definition after application of the hair care compositions according to Examples 1 to 4 of the present invention, compared to hair treated solely with a cleansing shampoo. Curl definition on the strands was obtained by image analysis. The results are shown in [Fig.2]. The horizontal dotted line represents the results after washing the hair with a cleansing shampoo only. The results of the loop definition score after the application of the four com- positions according to examples 2 to 4 of the present invention were significantly superior to the definition of the curls obtained after washing the hair with a cleansing shampoo. pH analysis test To assess the potential impact of the pH of hair care compositions on curl definition, an in vitro test was conducted using the compositions described in Example 1, varying the final pH. Six different pH values ​​were analyzed: pH 2, pH 3.5, pH 4.5, pH 5, pH 6, and pH 7. As shown by the results in [Fig.3], all hair care compositions according to example 1 with different pH values ​​showed good results in curl definition after application and touch, with the most suitable results being obtained with pH values ​​of 3.5, 4.5, 6 and 7.

Claims

Demands

1. Composition for hair care comprising: (a) at least one organic acid; (b) at least one compound with at least one hydroxyl group; (c) at least one amino acid; (d) at least one vegetable resin; and (e) water; in which the pH of the composition ranges from 2 to 7.

2. Composition, according to claim 1, wherein at least one organic acid is chosen from short-chain ε-hydroxy acids (AHAs), beta-hydroxy acids, and a mixture thereof.

3. Composition according to claim 1 or claim 2, in in which at least one organic acid is chosen from among the acid tartaric acid, lactic acid, glutaric acid, etidronic acid, acid salicylic acid, glycolic acid, and mixtures thereof, and in which the less an organic acid ranges from 0.5% to 8.0% by weight, relative to the total weight of the composition.

4. Composition, according to any one of the preceding claims, in which at least one compound with at least one group hydroxyl is chosen from among the polyols, the monoalcohols in C, to C5. and their mixtures, chosen from propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, glycerin, and their mixtures, and in which at least one compound with at minus a hydroxyl group ranges from 0.1% to 20% by weight, relative to the total weight of the composition.

5. Composition, according to any one of the preceding claims, in which the quantity of at least one amino acid ranges from 0.1% to 7.0% by weight, preferably from 0.1% to 6.0% by weight, more preferably typically from 0.1% to 5.0% by weight, even more preferably from 0.5% to 3.0% by weight, relative to the total weight of the composition.

6. Composition, according to any one of the preceding claims, in which the quantity of at least one plant resin ranges from 0.1% at 7.0% by weight, preferably from 0.1% to 5% by weight, preferably from 0.15% to 4.0% by weight, preferably from 0.17% to 4.0% by weight, relative to the total weight of the composition.

7. Composition, according to any one of the preceding claims, in which the plant resin includes the resin of Copaiba Officinalis (Copahu balsam) (oily resin or resin form).

8. Composition, according to any one of the preceding claims, including at least one vegetable oil and at least one Vegetable oil ranges from 0.1% to 7.0% by weight, preferably from 0.1% to 6.0% by weight, preferably from 0.15% to 5.0% by weight, preferably from 0.15% to 4.8% by weight, relative to the total weight of the composition.

9. Hair care composition comprising: (a) from 0.5% to 8.0% by weight of at least one selected organic acid among tartaric acid, lactic acid, glutaric acid, eti- dronic acid, salicylic acid, glycolic acid, and a mixture of these- Here; {b) from 0.1% to 20.0% by weight of at least one compound with at least a hydroxyl group chosen from among the polyols, the monoalcohols in C, to C 6, and a mixture of these; (c) from 0.1% to 7.0% by weight of arginine; {d) from 0.1% to 7.0% by weight of at least one vegetable resin; (e) water; and ( ) optionally, from 0.1% to 7.0% by weight of at least one oil plant-based, all weights being based on the total weight of the composition, and in which the pH of the composition ranges from 2 to 7.

10. A method for improving the definition of hair curls, the process comprising bringing the hair into contact with the composition cosmetics for hair care, as defined in one any of claims 1 to 9.