Hair dyeing process using an insoluble silicate, an aromatic compound and a hydroxylated aliphatic solvent
The present invention relates to a process for dyeing hair using at least one water-insoluble silicate, at least one compound of formula (I), in which Y represents a C1-C4 hydroxyalkyl group or a C1-C4 hydroxyalkyloxy radical, n denotes an integer ranging from 0 to 5, X, which may be identical or different, represents a C1-C4 alkyl radical or a halogen; and at least one hydroxylated aliphatic solvent comprising therein from 2 to 6 carbon atoms.
1. A process for dyeing hair comprising applying to the hair a composition comprising:
at least one component chosen from natural dyes in an amount ranging from 0.005-8%, bases in an amount ranging from 0.005-10%, and couplers in an amount ranging from 0.005-10%;
at least one water-insoluble silicate;
at least one compound of formula (I):
wherein Y is chosen from C 1 -C 4 hydroxyalkyl groups and C 1 -C 4 hydroxyalkyloxy radicals, n is an integer ranging from 0 to 5, and X, which may be identical or different, is chosen from C 1 -C 4 alkyl radicals and halogen atoms; and
at least one hydroxylated aliphatic solvent comprising from 2 to 6 carbon atoms.
2. The process according to claim 1 , wherein the at least one water-insoluble silicate is chosen from montmorillonites, hectorites, bentonites, beidellites, saponites, laponite, montmorillonite and bentonite.
3. The process according to claim 1 , wherein the amount of the at least one water-insoluble silicate ranges from about 0.1% to about 20% by weight relative to the total weight of the composition.
4. The process according to claim 3 , wherein the amount of the at least one water-insoluble silicate ranges from about 0.5% to about 10% by weight relative to the total weight of the composition.
5. The process according to claim 1 , wherein the natural dyes are chosen from at least one of lawsone, judlone, alizarin, purpurin, carminic acid, kermesic acid, laccaic acid, protocatechualdehyde, indigo, isatin, curcumin, spinulosin, apigenidin, chlorophyllin, sorghum sextracts, orceins, cochineal carmine, hematin, hematoxylin, brazilin, brazilein, extracts of logwood, extracts of orchil, and extracts of brazilwood.
6. The process according to claim 1 , wherein the at least one compound of formula (I) is chosen from benzyl alcohol, phenylethanol, and phenoxyethanol.
7. The process according to claim 1 , wherein the amount of the at least one compound of formula (I) ranges from about 0.1% to about 10% by weight, relative to the total weight of the composition.
8. The process according to claim 1 , wherein the at least one hydroxylated aliphatic solvent comprising from 2 to 6 carbon atoms is chosen from ethanol, glycerol, propylene glycol, dipropylene glycol, hexylene glycol.
9. The process according to claim 1 , wherein the weight ratio of the at least one compound of formula (I) to the at least one hydroxylated aliphatic solvent comprising from 2 to 6 carbon atoms is less than or equal to about 1.
10. The process according to claim 1 , wherein the weight ratio of the at least one compound of formula (I) to the at least one hydroxylated aliphatic solvent comprising from 2 to 6 carbon atoms ranges from about 0.1 to about 0.5.
11. The process according to claim 1 , wherein the composition further comprises at least one oxidizing agent.
12. A process for dyeing hair comprising applying to the hair a composition comprising:
at least one synthetic direct dye;
at least one water-insoluble silicate;
at least one aromatic compound of formula (I):
wherein Y is chosen from C 1 -C 4 hydroxyalkyl groups and C 1 -C 4 hydroxyalkyloxy radicals, n is an integer ranging from 0 to 5, and X, which may be identical or different, is chosen from C 1 -C 4 alkyl radicals and halogen atoms; and
ethanol.
13. The process according to claim 12 , wherein the at least one water-insoluble silicate is chosen from montmorillonites, hectorites, bentonites, beidellites, saponites, preferably laponite, montmorillonite and bentonite.
14. The process according to claim 12 , wherein the amount of the at least one water-insoluble silicate ranges from about 0.1% to about 20% by weight relative to the total weight of the composition.
15. The process according to claim 14 , wherein the amount of the at least one water-insoluble silicate ranges from about 0.5% to about 10% by weight relative to the total weight of the composition.
16. The process according to claim 12 , wherein the at least one compound of formula (I) is chosen from benzyl alcohol, phenylethanol, and phenoxyethanol.
17. The process according to claim 12 , wherein the amount of the at least one compound of formula (I) ranges from about 0.1% to about 10% by weight, relative to the total weight of the composition.
18. The process according to claim 12 , wherein the weight ratio of the at least one compound of formula (I) to ethanol is less than or equal to about 1.
19. The process according to claim 18 , wherein the weight ratio of the at least one compound of formula (I) to ethanol ranges from about 0.1 to about 0.5.
20. The process according to claim 12 , wherein the composition further comprises at least one oxidizing agent.