| 摘要 |
<p>A hair keratin dyeing composition is provided to dye the hair keratin blue without skin irritation and hair damage, and enhance coloring effects, washability and maintenance ability of blue color, and easily apply to the hair keratin. A hair keratin dyeing composition comprises 0.01-5 wt.% of a blue reactive dye with a vinylsulfone group, represented by the formula(5) in which M is H, Li, Na or K, and 1-10 wt.% of thickening agent, 1-20 wt.% of penetrant and a remaining amount of water as essential components, and optionally comprises 1-5 wt.% of pH regulating agent and a -S-S bond-reducing agent for improving coloring effects, wherein the hair coloring is accomplished by forming a covalent bond between the vinylsulfone group of blue reactive dye and a function group of hair keratin under acidic condition.</p> |
