Jennifer Mary Marsh,Sebastian Karol Galazka,Elizabeth Hitchcock Agostino,Brandon Scott Lane,Tracy Stephens,Martha Cona
申请号：
US15466114
公开号：
US20170273883A1
申请日:
2017.03.22
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Described herein is a method for treating and coloring hair including un-pigmented hair. The method includes (a) providing a first composition including one or more heavy metal ion sequestrants (b) applying the first composition to the hair (c) providing a second composition including one or more weak acids having a pKa from 2.5 to 5 (d) applying the second composition to the hair (e) providing a third composition including one or more direct dyes chosen from nitro dye, disperse dye, cationic dye, acid dye, basic dye, neutral azo dye and mixtures thereof, and (f) applying the third composition to the hair. The third composition is able to decrease the reflectance of un-pigmented hair in a wavelength range from 530 nm to 670 nm.
