| 摘要 |
PURPOSE:To obtain the title composition exhibiting hair-treatment effect as well as hair-dye effect by single use, frequently applicable without damaging the hair and capable of constantly keeping the hair in excellent dyed state, by compounding 1,3-dihydroxyacetone as an active hair-dye component. CONSTITUTION:1,3-Dihydroxyacetone of formula is compounded as an active hair-dye component in an amount of 0.1-15wt.% based on the whole composition. The obtained composition enables easy dyeing of hair simultaneous to hair treatment without causing the damage of hair. It can be applied without using troublesome pretreatment of hair before use. The hair can be maintained in a desirable state even by frequency using the composition. The monophosphoric acid ester of the formula is an intermediate of a Krebs cycle of living body and has high safety in use. The hair-dyeing effect of the composition can be sufficiently exhibited without trouble even by using the composition in combination with various compounded components of hair-treatment composition such as shampoo. It can be used in the form of shampoo, hair-rinse, hair- treatment, hair-liquid, etc. |
