Method of repairing oxidatively treated hair

Patent metadata

Field	Value
Publication number	US-12076432-B2
Application number	US-201917051233-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	May 10, 2018
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A method of repairing oxidatively-treated hair, the methods comprising the sequential steps of: (i) soaking hair in an aqueous treatment composition, (ii) rinsing the hair of step (i); characterised in that the aqueous treatment composition comprises 0.1 to 6 wt % N-acetyl amino acid, based on the total weight of the composition, wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl tyrosine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof, gives damage repair benefits.

First claim

The invention claimed is:

1. A method of repairing oxidatively-treated hair, the method consisting of:
(i) soaking hair in an aqueous treatment composition;
(ii) rinsing the hair of step (i);
(iii) optionally washing the hair of step (ii); and
(iv) optionally drying the hair after step (ii) and/or after step (iii)
wherein the aqueous treatment composition comprises 0.1 to 6 wt % N-acetyl amino acid, based on the total weight of the composition,
wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl tyrosine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof.

2. The method of claim 1 , wherein the rinsed hair is washed, and
wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof.

3. The method of claim 1 , wherein the rinsed hair is dried.

4. The method of claim 1 , wherein the N-acetyl amino acid is used in the free acid form.

5. The method of claim 1 , wherein the hair is soaked in the aqueous treatment composition at a temperature of from 15° C. to 40° C.; for a period of 3 min to 45 min.

6. The method of claim 1 , wherein the aqueous treatment composition comprises an aqueous continuous phase.

7. The method of claim 1 , wherein the aqueous treatment composition is a hair conditioner comprising a conditioning agent.

8. The method of claim 1 , wherein the aqueous treatment composition is a shampoo, a conditioner, a mask or a leave-on product.

9. A method of repairing oxidatively-treated hair, the method comprising:
(i) soaking hair in an aqueous treatment composition; and
(ii) rinsing the hair of step (i);

wherein the aqueous treatment composition consists of:
(a) 0.1 to 6 wt % N-acetyl amino acid, based on the total weight of the composition,
(b) a conditioning gel phase, formed from a cationic surfactant, a high melting point fatty alcohol and an aqueous carrier;
(c) optionally one or more ingredients selected from preservatives, colouring agents, chelating agents, antioxidants, fragrances, antimicrobials, antidandruff agents, cationic conditioning polymers, styling ingredients, sunscreens, proteins and hydrolysed proteins;
(d) optionally an organic solvent; and
(e) water
wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl tyrosine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof.

10. The method of claim 9 , which further comprises a step (iii), sequential to step (ii), comprising washing the hair of step (ii), and
wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof.

11. The method of claim 9 , which further comprises a drying step.

12. The method of claim 11 , wherein the rinsed hair is dried.

13. The method of claim 9 , wherein the N-acetyl amino acid is used in the free acid form.

14. The method of claim 9 , wherein the hair is soaked in the aqueous treatment composition at a temperature of from 15° C. to 40° C.

15. The method of claim 9 , wherein the hair is soaked in the aqueous treatment composition for a period ranging from 3 minutes to 45 minutes.

16. The method of claim 9 , wherein the aqueous treatment composition comprises an aqueous continuous phase.

17. The method of claim 9 , wherein the cationic surfactant comprises a quaternary ammonium cationic surfactant having the general formula:
[N(R 1 )(R 2 )(R 3 )(R 4 )] + (X) −
wherein R 1 , R 2 , R 3 , and R 4 are each independently selected from:
(a) an aliphatic group of from 1 to 22 carbon atoms, or
(b) an aromatic, alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl, aryl or alkylaryl group having up to 22 carbon atoms; and

X is a salt-forming anion such as those selected from halide, acetate, citrate, lactate, glycolate, phosphate nitrate, sulphate, and alkylsulphate radicals.

18. The method of claim 17 , wherein the quaternary ammonium cationic surfactant is selected from the group consisting of cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetylpyridinium chloride, tetramethylammonium chloride, tetraethylammonium chloride, octyltrimethylammonium chloride, dodecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride, stearyldimethylbenzylammonium chloride, didodecyldimethylammonium chloride, dioctadecyldimethylammonium chloride, tallowtrimethylammonium chloride, cocotrimethylammonium chloride, dipalmitoylethyldimethylammonium chloride, and PEG-2 oleylammonium chloride; and salts thereof, wherein the chloride is replaced by other halide, acetate, citrate, lactate, glycolate, phosphate nitrate, sulphate, or an alkylsulphate.

19. The method of claim 9 , wherein the high melting point fatty alcohol has the general formula CH 3 (CH 2 ) n OH; where n is an integer from 7 to 29.

20. The method of claim 19 , wherein the high melting point fatty alcohol is selected from the group consisting of cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.

Assignees

• Conopco Inc

Inventors

• Ng Andrew
• Paul Prem Kumar Cheyalazhagan
• Rogers Charlotte Breony Tandy

Classifications

• A61Q5/12

  Preparations containing hair conditioners · CPC title

• A61Q5/002

  Preparations for repairing the hair, e.g. hair cure · CPC title

• A61K8/4946

  Imidazoles or their condensed derivatives, e.g. benzimidazoles · CPC title

• A61K8/492

  having condensed rings, e.g. indol · CPC title

• A61K8/4913

  having five membered rings, e.g. pyrrolidone carboxylic acid · CPC title