Strictly follow safety instructions and consult www.wella.com/kolestonperfect. If you have ever experienced an allergic reaction to hair colorants, you should not color. ME+ is present in specific shades of Pure Naturals, Rich Naturals, Vibrant Reds, Special Blondes and Deep Browns of the ...
Once the color is completely applied to hair, wait 20 minutes. For resistant gray hair, you may need to leave color on for an additional 5 minutes, for no longer than a total of 30 minutes. Do a strand test to get your unique timing....