Abstract: The present invention relates to two methods for coloring hair. The first method foresees the application of a hair coloring composition to the front hair roots, that of a different composition to the back hair roots and optionally that of a third composition to the rest of the hair. The method generates a coloring effect and a masking effect of the new growth which allows a longer lasting coloring effect. The second method foresees the application of a hair coloring composition to the hair roots and that of a different composition to the remaining hair. Also disclosed are kits for performing each of these methods.

Abstract: 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.