Hair conditioning composition for permanent and semi-permanent hair coloration applications

1. A hair conditioning composition for permanent and semi-permanent hair color applications, the hair conditioning composition comprising:

a solvent,

a water-soluble, oligo-peptide from a natural proteinaceous raw-material source containing sulfur which is selected from the group consisting of keratin hydrolysates,

alkaline or alkaline earth metal ions,

a multidentate ligand or chelating agent, and optionally

a redox-active inorganic or redox-active organic component,

wherein an aqueous solution of the keratin hydrolysate has a critical micelle concentration at 25° C. in the range of from ≥0.05 mM to 0.5 mM, and

wherein the average molecular weight of the keratin hydrolysate is in the range of 3000 Da to 7000 Da.

2. The hair conditioning composition according to claim 1 , wherein the hair conditioning composition exhibits a negative redox-potential in the range between −1000 mV and −10 mV.

3. The hair conditioning composition according to claim 1 , wherein the hair conditioning composition further comprises a quaternary cationic surface active agent.

4. The hair conditioning composition according to claim 1 , wherein the solvent is selected from the group consisting of water, alcohols having 1-5 carbon atoms, and any mixture thereof.

5. The hair conditioning composition according to claim 1 , wherein the hair conditioning composition contains from 1% (w/w) to 10% (w/w) of the water-soluble oligo-peptide.

6. The hair conditioning composition according to claim 1 , wherein the natural, proteinaceous raw-material source containing sulfur is selected from the group consisting of garbanzo beans, kidney beans, lentils, lima beans, navy beans, soybeans, barley, brown rice, buckwheat, millet, oatmeal, quinoa, rye, wheat germ, wheat, wild rice, wool, feathers, hair and horn.

7. The hair conditioning composition according to claim 1 , wherein the oligo-peptide is obtained by an alkaline hydrolysis process comprising:

suspending the proteinaceous material in water;

adding a chelating agent to the aqueous protein suspension;

adding an alkali to the aqueous protein suspension;

heating the suspension to a temperature ≥60° C.;

adjusting the pH of the mixture between pH 2 and pH 10; and

filtering the mixture.

8. The hair conditioning composition according to claim 1 , wherein the oligo-peptide is chemically modified by the use of phosphoric acid or phosphoric acid esters.

9. The hair conditioning composition according to claim 1 , wherein the hair conditioning composition further comprises a hair coloring agent, a hair conditioning ingredient, an oil, a surface active agent, or a buffer.

10. The hair conditioning composition according to claim 1 , wherein the hair care composition is in the form of a solution.

11. The hair conditioning composition according to claim 1 , wherein the hair care composition is in the form of an emulsion, suspension or gel.

12. The hair conditioning composition according to claim 1 , wherein the solvent is propylene glycol.

13. The hair conditioning composition according to claim 1 , wherein the solvent is glycerine.

14. A method of conditioning hair comprising applying the hair conditioning composition according to claim 1 onto the hair.

15. The method according to claim 14 , wherein the hair conditioning composition is applied to the hair before a coloration process.

16. The method according to claim 14 , wherein the composition is applied to the hair in a hair coloration treatment.

17. A kit of parts for hair care containing

A) a hair conditioning composition comprising:

a solvent,

a water-soluble, oligo-peptide from a natural proteinaceous raw-material source containing sulfur which is selected from the group consisting of keratin hydrolysates,

alkaline metal ions or alkaline earth metal ions,

a multidentate ligand or chelating agent, and optionally

a redox-active inorganic component or a redox-active organic component, wherein

an aqueous solution the keratin hydrolysate has a critical micelle concentration at 25° C. in the range of from ≥0.05 mM to 0.5 mM, and wherein the average molecular weight of the keratin hydrolysate is in the range of 3,000 Da to 7,000 Da, and

B) a hair treatment composition selected from the group consisting of a hair shampoo, a hair coloring solution, a hair rinse solution, a hair straightening composition, a hair curing composition, a heat repair composition and any combination thereof.

18. The kit of parts for hair care according to claim 17 , wherein component B is a hair coloring solution for permanent and semi-permanent hair color applications.