Hair dye and process for dyeing hair

Details Hair dye and process for dyeing hair Hair dye and process for dyeing hair

A - Human Necessities

61

K

167/302

A61K 8/49 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 1062617

ABSTRACT OF THE DISCLOSURE A novel hair dye is provided which does not cause allergic reactions and which has good colouring properties. The dye is based upon melanin precur- sors, which typically give rise to allergic reactions from many users. In the present invention, there is provided, as a cutting agent, a first component comprising dithiothreitol or dithioerythritol or both; as a dye composition, a second component comprising a conventional natural melanin precursor and at least one compound selected from the group consisting of 5-hydroxyindole 1 methyl- 5,6-dihydroxyindole-2-carboxylate, tyramine, dopamine, 6-hydroxydopamine and pyrocatechol; as an oxidizing agent, a third component comprising a persulfate compound; and a further oxidizing agent consisting of tyrosinase which is ad- mixed with either said second or said third component.

214917

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