Patent ID: 6537330
Filing Date: 2003-03-25
Classification: A61K,A61Q

Abstract:
A composition for restoring gray keratin fibers to a natural color comprising:a) from 0.05 percent by weight to 10 percent by weight of a dye precursor comprising at least one indoline or indole, wherein the indoline or indole serves as a precursor to melanin; and b) from 0.1 percent by weight to 10 percent by weight of an alpha-aminocarboxylic acid selected from the group consisting of arginine, ornithine, lysine, histidine, and mixtures thereof, wherein the alpha-aminocarboxylic acid has a pH of 9 or greater in water at a concentration of 2.5 percent by weight, wherein the composition restores gray keratin fibers to their natural color, and wherein said weight percents are based on the total weight of the composition.