Hair dye compositions based on 2,5-diamino-6-nitropyridine derivatives
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United States of America Patent
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Sep 8, 1992
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app pub date -
Apr 20, 1990
filing date -
Aug 17, 1987
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Abstract
A composition for dyeing hair containing 2,5-diamino-6-nitropyridine, a solvent which is preferably water, a surfactant and at least one cosmetic additive selected from the group consisting of thickeners; care agents; perfume oils; complexing agents; oxidation hair dyes; and direct hair dyes; preservatives; a pH-adjusting member selected from the group consisting of ammonia, monoethanol amine and triethanol amine; and a polymer selected from the group consisting of chitosan derivatives, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, polyacrylonitrile, polyvinyl lactam and copolymers thereof.
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