Hair dyeing process and composition

Details Hair dyeing process and composition Hair dyeing process and composition

A - Human Necessities

61

K

167/302

A61K 8/49 (2006.01) A01K 15/02 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 1201067

Abstract of the Disclosure A hair dyeing process which comprises of steps of contacting the hair to be dyed with an aqueous solution of a metal salt that promotes melanogenses in air. Before or after the aforementioned step contacting the hair with a solution of 5,6-dihydroxyindole, rinsing the hair between the two contacting steps, maintaining the contact with the second-used solution until a desired darker color is obtained, rinsing or shampooing the hair, then contacting the hair with a solution of hydrogen peroxide until the desired color shade is obtained, and then again rinsing the hair.

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