METHOD FOR STRAIGHTENING KERATINOUS FIBERS USING HEATING MEANS AND AN AROMATIC COMPOUND

Abstract

The invention concerns a method for straightening keratinous fibers including: (i) a step of applying on the keratinous fibers a hair straightening composition containing at least one polyhydroxylated aromatic compound, (ii) a step of increasing the temperature of the keratinous fibers, using heating means, to a temperature ranging between 110 and 250 C.

Claims

1-11. (canceled)

12. A process for relaxing keratin fibers, comprising: applying to the keratin fibers a hair-relaxing composition comprising at least one polyhydroxylated aromatic compound, wherein the pH of said hair relaxing composition is less than or equal to 9, and heating the keratin fibers to a temperature ranging from 110 C. to 250 C., wherein the polyhydroxylated aromatic compound is not chosen from: 4,5-diamino-2,6-dihydroxypyrimidine, 2,4-dihydroxypyrimidine-5-carboxylic acid, 2,4-dihydroxy-6-methylpyrimidine, dihydroxyorotic acid, or 2,4,5-trihydroxypyrimidine.

13. The process according to claim 12, wherein the keratin fibers are heated to a temperature ranging from 120 C. to 220 C.

14. The process according to claim 13, wherein the keratin fibers are heated to a temperature ranging from 140 C. to 220 C.

15. The process according to claim 12, wherein the hair-relaxing composition is applied to wet keratin fibers.

16. The process according to claim 12, wherein the keratin fibers are partially predried.

17. The process according to claim 12, wherein the molar concentration of the at least one polyhydroxylated aromatic compound ranges from 1 to 8 M.

18. The process according to claim 17, wherein the molar concentration of the at least one polyhydroxylated aromatic compound ranges from 1 to 4 M.

19. The process according to claim 18, wherein the molar concentration of the at least one polyhydroxylated aromatic compound ranges from 1.5 to 3M.

20. The process according to claim 12, wherein the pH of the hair relaxing composition is less than or equal to 7.

21. The process according to claim 12, wherein the at least one polyhydroxylated aromatic compound is chosen from compounds of formula (I): ##STR00004## wherein: R1, R2, R3, and R4, which may be identical or different, are chosen from: H, F, Cl, Br, OH, OCH.sub.3, OEt, CHO, COCH.sub.3, COOH, CH.sub.2NH.sub.2, CH.sub.2CH.sub.2NH.sub.2, CH.sub.2OH, CH.sub.2CH.sub.2OH, CH.sub.2COCH.sub.3, CH.sub.2COOH, COCH.sub.2CH.sub.3, CONH.sub.2, or linear or branched C.sub.1-C.sub.5 alkyl radicals; and when the two OH radicals are in a meta position and when R1, R2, and R3 are hydrogen atoms, R4 is optionally NH.sub.2, stereoisomers thereof, organic salts thereof, or mineral salts thereof.

22. The process according to claim 21, wherein the compound of formula (I) is chosen from: catechol, resorcinol, 4-methylcatechol, 3-methylcatechol, 2-methylresorcinol, 5-methylresorcinol, 4-methylresorcinol, pyrogallol, 1,2,4-trihydroxybenzene, phloroglucinol, 3-fluorocatechol, 4-fluorocatechol, 4-fluororesorcinol, 2,3-dihydroxybenzaldehyde, 3,4-dihydroxybenzaldehyde, 2,4-dihydroxybenzaldehyde, 3,5-dihydroxybenzaldehyde, 4-ethylcatechol, 4-ethylresorcinol, 2,5-dimethylresorcinol, 4,5-dimethylresorcinol, 2,4-dimethyl-1,3-benzenediol, 3,4-dihydroxybenzylamine, 3,5-dihydroxybenzylamine, 3-methoxycatechol, 5-methylpyrogallol, 3,4-dihydroxybenzyl alcohol, 5-methoxyresorcinol, 2,4,6-trihydroxytoluene, 3,5-dihydroxybenzyl 3,5-dihydroxybenzaldehyde, 4-ethylcatechol, 4-ethylresorcinol, 2,5-dimethylresorcinol, 4,5-dimethylresorcinol, 2,4-dimethyl-1,3-benzenediol, 3,4-dihydroxybenzylamine, 3,5-dihydroxybenzylamine, 3-methoxycatechol, 5-methylpyrogallol, 3,4-dihydroxybenzyl alcohol, 5-methoxyresorcinol, 2,4,6-trihydroxytoluene, 3,5-dihydroxybenzyl alcohol, 2-methoxyresorcinol, 5-methylpyrogallol, 4-methoxyresorcinol, 3,5-dihydroxytoluene monohydrate, 4-chlorocatechol, 3-chlorocatechol, 4-chlororesorcinol, 2-chlororesorcinol, 3,4-dihydroxyacetophenone, 2,3-dihydroxyacetophenone, 2,6-dihydroxyacetophenone, 2,4-dihydroxyacetophenone, 3,5-dihydroxyacetophenone, 2,6-dihydroxy-4-methylbenzaldehyde, 3-isopropylcatechol, 4-isopropylcatechol, 4-propylresorcinol, 2,4-dihydroxy-1,3,5-trimethylbenzene, 3,4-dihydroxybenzamide, 3,5-dihydroxybenzamide, 2,6-dihydroxybenzamide, 2,4-dihydroxybenzamide, 3-hydroxytyramine, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 3,5-dihydroxybenzoic acid, 2,3,4-trihydroxybenzaldehyde, 2,4,6-trihydroxybenzaldehyde, 3,4,5-trihydroxybenzaldehyde, 2,4,5-trihydroxybenzaldehyde, 2-(3,4-dihydroxyphenyl)ethanol, 2,4,6-trihydroxy-1,3-dimethylbenzene, 2,6-dihydroxy-4-methylbenzyl alcohol, 2-fluoro-3,4-dihydroxybenzaldehyde, 3,4-dihydroxy-6-fluorobenzaldehyde, 2-methoxyphloroglucinol, 3,5-dihydroxyanisole hydrate, 4-aminoresorcinol hydrochloride, 2-aminoresorcinol hydrochloride, 5-aminobenzene-1,3-diol hydrochloride, phloroglucinol dihydrate, 3,4-dihydroxypropiophenone, 3,4-dihydroxyphenylacetone, (2,3-dihydroxyphenyl)acetone, 2,4-dihydroxypropiophenone, 2,4-dihydroxy-3-methylacetophenone, (2,4-dihydroxyphenyl)acetone, (3,5-dihydroxyphenyl)acetone, 2,6-dihydroxy-4-methylacetophenone, 4-tert-butylcatechol, 4-N-butylresorcinol, 2,4-diethyl-1,3-benzenediol, 3,4-dihydroxyphenylacetamide, 3-hydroxyacetaminophen, 2,3,4-trihydroxyacetophenone, 3,4-dihydroxyphenylacetic acid, 2,3-dihydroxy-4-methoxybenzaldehyde, 3,4-dihydroxy-5-methoxybenzaldehyde, 2,3,4-trihydroxyacetophenone, 2,4,6-trihydroxyacetophenone, 3,5-dihydroxy-4-methylbenzoic acid, 2,6-dihydroxy-4-methylbenzoic acid, 2,4-dihydroxy-6-methylbenzoic acid, 3,5-dihydroxyphenylacetic acid, 2-ethyl-5-methoxybenzene-1,3-diol, 3,4,5,-trihydroxybenzamide, 4-amino-3,5-dihydroxybenzoic acid, 2,3,4-trihydroxybenzoic acid, 2,3,4-trihydroxybenzoic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, 3,4-dihydroxyphenyl glycol, 1,2-dihydroxy-4,5-dimethoxybenzene, 3,5-dihydroxyacetophenone monohydrate, 3,4-dihydroxybenzoic acid monohydrate, 3,4,5-trihydroxybenzaldehyde, hexahydroxybenzene, 3,5-dihydroxybenzylamine hydrochloride, 4,6-diaminoresorcinol hydrochloride, 4,5-dichlorocatechol, 3,5-dichlorocatechol, 4,6-dichlororesorcinol, 2,4-dihydroxy-3-methylpropiophenone, 1-(3-ethyl-2,6-dihydroxyphenyl)ethan-1-one, 3-(3,4-dihydroxyphenyl)propionic acid, (2,3,4-trihydroxyphenyl)acetone, (2,4,5-trihydroxyphenyl)acetone, (3,4,5-trihydroxyphenyl)acetone, 2,6-dihydroxy-4-methoxyacetophenone, 1-(2,6-dihydroxy-3-methoxyphenyl)ethan-1-one, 3(2,4-dihydroxyphenylpropionic acid, 2,4-dihydroxy-3,6-dimethylbenzoic acid, (2,3,4-trihydroxyphenyl)acetone, (2,4,5-trihydroxyphenyl)acetone, (2,4,6-trihydroxyphenyl)acetone, (3,4,5-trihydroxyphenyl)acetone, 3,4-dihydroxymandelic acid, 5-hydroxyisovanillic acid, 3,4,5-trihydroxybenzamide hydrate, 4-bromocatechol, stereoisomers thereof, organic salts thereof, or mineral salts thereof.

23. The process according to claim 21, wherein the compound of formula (I) is chosen from: resorcinol, 2-methylresorcinol, 5-methylresorcinol, 4-methylresorcinol, pyrogallol, 1,2,4-trihydroxybenzene, 4-ethylresorcinol, 2,5-dimethylresorcinol, 4,5-dimethylresorcinol, 2,4-dimethyl-1,3-benzenediol, 3,4-dihydroxybenzylamine, 3,5-dihydroxybenzylamine, 5-methylpyrogallol, 3,4-dihydroxybenzyl alcohol, 5-methoxyresorcinol, 2,4,6-trihydroxytoluene, 3,5-dihydroxybenzyl alcohol, 2-methoxyresorcinol, 5-methylpyrogallol, 4-methoxyresorcinol, 3,5-dihydroxytoluene monohydrate, 4-propylresorcinol, 2,4-dihydroxy-1,3,5-trimethylbenzene, 3,4-dihydroxybenzamide, 3,5-dihydroxybenzamide, 2,6-dihydroxybenzamide, 2,4-dihydroxybenzamide, 3-hydroxytyramine, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 3,5-dihydroxybenzoic acid, 2-(3,4-dihydroxyphenyl)ethanol, 2,4,6-trihydroxy-1,3-dimethylbenzene, 2,6-dihydroxy-4-methylbenzyl alcohol, 2-methoxyphloroglucinol, 3,5-dihydroxyanisole hydrate, 4-aminoresorcinol hydrochloride, 2-aminoresorcinol hydrochloride, 5-aminobenzene-1,3-diol hydrochloride, phloroglucinol dihydrate, 2,4-diethyl-1,3-benzenediol, 3,4-dihydroxyphenylacetamide, 3,4-dihydroxyphenylacetic acid, 3,5-dihydroxy-4-methylbenzoic acid, 2,6-dihydroxy-4-methylbenzoic acid, 2,4-dihydroxy-6-methylbenzoic acid, 3,5-dihydroxyphenylacetic acid, 2-ethyl-5-methoxybenzene-1,3-diol, 3,4,5-trihydroxybenzamide, 4-amino-3,5-dihydroxybenzoic acid, 3,4-trihydroxybenzoic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, DL-3,4-dihydroxyphenyl glycol, 1,2-dihydroxy-4,5-dimethoxybenzene, 3,4-dihydroxybenzoic acid monohydrate, hexahydroxybenzene, 3,5-dihydroxybenzylamine hydrochloride, sodium -resorcylate, sodium -resorcylate, 4,6-diaminoresorcinol hydrochloride, 3-(3,4-dihydroxyphenyl)propionic acid, 2,4-dihydroxy-3,6-dimethylbenzoic acid, DL-3,4-dihydroxymandelic acid, hydroxyisovanillic acid, 3,4,5-trihydroxybenzamide acid hydrate, gallic acid monohydrate, stereoisomers thereof, organic salts thereof, or mineral salts thereof.

24. A kit comprising: at least one heating apparatus that provides a temperature ranging from 110 C. to 250 C., at least one hair-relaxing composition comprising at least one polyhydroxylated aromatic compound, wherein the pH of said hair-relaxing composition is less than or equal to 9, and wherein the polyhydroxylated aromatic compound is not chosen from: 4,5-diamino-2,6-dihydroxypyrimidine, or 2,4-dihydroxypyrimidine-5-carboxylic acid.

25. The kit according to claim 24, wherein the at least one hair-relaxing composition comprises at least one polyhydroxylated aromatic compound chosen from: catechol, resorcinol, 4-methylcatechol, 3-methylcatechol, 2-methylresorcinol, 5-methylresorcinol, 4-methylresorcinol, pyrogallol, 1,2,4-trihydroxybenzene, phloroglucinol, 3-fluorocatechol, 4-fluorocatechol, 4-fluororesorcinol, 2,3-dihydroxybenzaldehyde, 3,4-dihydroxybenzaldehyde, 2,4-dihydroxybenzaldehyde, 3,5-dihydroxybenzaldehyde, 4-ethylcatechol, 4-ethylresorcinol, 2,5-dimethylresorcinol, 4,5-dimethylresorcinol, 2,4-dimethyl-1,3-benzenediol, 3,4-dihydroxybenzylamine, 3,5-dihydroxybenzylamine, 3-methoxycatechol, 5-methylpyrogallol, 3,4-dihydroxybenzyl alcohol, 5-methoxyresorcinol, 2,4,6-trihydroxytoluene, 3,5-dihydroxybenzyl alcohol, 2-methoxyresorcinol, 5-methylpyrogallol, 4-methoxyresorcinol, 3,5-dihydroxytoluene monohydrate, 4-chlorocatechol, 3-chlorocatechol, 4-chlororesorcinol, 2-chlororesorcinol, 3,4-dihydroxyacetophenone, 2,3-dihydroxyacetophenone, 2,6-dihydroxyacetophenone, 2,4-dihydroxyacetophenone, 3,5-dihydroxyacetophenone, 2,6-dihydroxy-4-methylbenzaldehyde, 3-isopropylcatechol, 4-isopropylcatechol, 4-propylresorcinol, 2,4-dihydroxy-1,3,5-trimethylbenzene, 3,4-dihydroxybenzamide, 3,5-dihydroxybenzamide, 2,6-dihydroxybenzamide, 2,4-dihydroxybenzamide, 3-hydroxytyramine, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 3,5-dihydroxybenzoic acid, 2,3,4-trihydroxybenzaldehyde, 2,4,6-trihydroxybenzaldehyde, 3,4,5-trihydroxybenzaldehyde, 2,4,5-trihydroxybenzaldehyde, 2-(3,4-dihydroxyphenyl)ethanol, 2,4,6-trihydroxy-1,3-dimethylbenzene, 2,6-dihydroxy-4-methylbenzyl alcohol, 2-fluoro-3,4-dihydroxybenzaldehyde, 3,4-dihydroxy-6-fluorobenzaldehyde, 2-methoxyphloroglucinol, 3,5-dihydroxyanisole hydrate, 4-aminoresorcinol hydrochloride, 2-aminoresorcinol hydrochloride, 5-aminobenzene-1,3-diol hydrochloride, phloroglucinol dihydrate, 3,4-dihydroxypropiophenone, 3,4-dihydroxyphenylacetone, (2,3-dihydroxyphenyl)acetone, 2,4-dihydroxypropiophenone, 2,4-dihydroxy-3-methylacetophenone, (2,4-dihydroxyphenyl)acetone, (3,5-dihydroxyphenyl)acetone, 2,6-dihydroxy-4-methylacetophenone, 4-tert-butylcatechol, 4-N-butylresorcinol, 2,4-diethyl-1,3-benzenediol, 3,4-dihydroxyphenylacetamide, 3-hydroxyacetaminophen, 2,3,4-trihydroxyacetophenone, 3,4-dihydroxyphenylacetic acid, 2,3-dihydroxy-4-methoxybenzaldehyde, 3,4-dihydroxy-5-methoxybenzaldehyde, 2,3,4-trihydroxyacetophenone, 2,4,6-trihydroxyacetophenone, 3,5-dihydroxy-4-methylbenzoic acid, 2,6-dihydroxy-4-methylbenzoic acid, 2,4-dihydroxy-6-methylbenzoic acid, 3,5-dihydroxyphenylacetic acid, 2-ethyl-5-methoxybenzene-1,3-diol, 3,4,5,-trihydroxybenzamide, 4-amino-3,5-dihydroxybenzoic acid, 2,3,4-trihydroxybenzoic acid, 2,3,4-trihydroxybenzoic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, 3,4-dihydroxyphenyl glycol, 1,2-dihydroxy-4,5-dimethoxybenzene, 3,5-dihydroxyacetophenone monohydrate, 3,4-dihydroxybenzoic acid monohydrate, 3,4,5-trihydroxybenzaldehyde, hexahydroxybenzene, 3,5-dihydroxybenzylamine hydrochloride, 4,6-diaminoresorcinol hydrochloride, 4,5-dichlorocatechol, 3,5-dichlorocatechol, 4,6-dichlororesorcinol, 2,4-dihydroxy-3-methylpropiophenone, 1-(3-ethyl-2,6-dihydroxyphenyl)ethan-1-one, 3-(3,4-dihydroxyphenyl)propionic acid, (2,3,4-trihydroxyphenyl)acetone, (2,4,5-trihydroxyphenyl)acetone, (3,4,5-trihydroxyphenyl)acetone, 2,6-dihydroxy-4-methoxyacetophenone, 1-(2,6-dihydroxy-3-methoxyphenyl)ethan-1-one, 3(2,4-dihydroxyphenylpropionic acid, 2,4-dihydroxy-3,6-dimethylbenzoic acid, (2,3,4-trihydroxyphenyl)acetone, (2,4,5-trihydroxyphenyl)acetone, (2,4,-trihydroxyphenyl)acetone, (3,4,5-trihydroxyphenyl)acetone, 3,4-dihydroxymandelic acid, 5-hydroxyisovanillic acid, 3,4,5-trihydroxybenzamide hydrate, and 4-bromocatechol, stereoisomers thereof, organic salts thereof, or mineral salts thereof.

Description

EXAMPLE 1

[0090] A simplified hair-relaxing composition is prepared, containing resorcinol at a concentration of 8 M in water, as hair-relaxing active agent. This composition is applied to naturally curly African hair for 15 minutes at a temperature of 40 C., and the hair is then rapidly towel-dried.

[0091] Lock-by-lock straightening of the head of hair is then performed using a flat iron heated to 180 C., for 10 to 15 seconds. The hair is efficiently relaxed and feels soft.

EXAMPLE 2

[0092] A simplified hair-relaxing composition is prepared, containing resorcinol at a concentration of 4 M in water, as hair-relaxing active agent. This composition is applied to naturally curly African hair for 15 minutes at a temperature of 40 C., and the hair is then rapidly towel-dried.

[0093] Lock-by-lock straightening of the head of hair is then performed using a flat iron heated to 180 C., for 10 to 15 seconds. The hair is efficiently relaxed and feels soft.

EXAMPLE 3

[0094] A simplified hair-relaxing composition is prepared, containing resorcinol at a concentration of 2 M in water, as hair-relaxing active agent. This composition is applied to naturally curly African hair for 25 minutes at a temperature of 40 C., and the hair is then rapidly towel-dried.

[0095] Lock-by-lock straightening of the head of hair is then performed using a flat iron heated to 180 C., for 10 to 15 seconds. The hair is efficiently relaxed and feels soft.