Compositions for Dyeing Hair with Cationic Direct Dyes

摘要

Described herein is a hair color composition for dyeing the hair. The hair color composition includes one or more direct dye compounds and one or more additional ingredients. The one or more direct dye compounds each include a chromophore, one or two permanent cations, and one to four incipient cations. The one to four incipient cations are pendant to the core structure and are neutral. The one or more direct dye compounds enter the hair shaft after the hair color composition is applied to the hair. The hair color composition has a pH of from about 7 to about 11.

主权项

1) A hair color composition comprising:
a. one or more direct dye compounds, the one or more direct dye compounds each comprising:
i. a chromophore;ii. one or two permanent cations, wherein the permanent cations are pendant to the chromophore or part of the chromophore, wherein the chromophore and the permanent cations form a core structure; andiii. one to four incipient cations, wherein each of the incipient cations is pendant via a linker group to the core structure, and wherein the incipient cations are neutral; and b. an additional ingredient selected from the group consisting of organic solvents, oxidizing agents, alkalizing agents, oxidative dye precursors, direct dyes, chelants, radical scavengers, pH modifiers, buffering agents, thickeners, rheology modifiers, carbonate ion sources, peroxymonocarbonate ion sources, surfactants, polymers, natural ingredients, fragrances, enzymes, dispersing agents, peroxides, peroxide stabilizing agents, antioxidants, protein compounds, plant extracts, conditioning agents, ceramides, phospholipids, UV blockers, preserving agents, emollients, moisturizing agents, pigments, opacifiers, pearling agents, and mixtures thereof; wherein the hair color composition has a pH of from about 7 to about 11.