Pure and balanced color results with natural ME+ depth and shine, up to 60 times less likely to cause a new hair coloring allergyMixing Ratio: 1:1 ratio, the same amount of Koleston Perfect ME+ dye as Wella oxidant. For the Koleston Perfect ME+ super-clarifying dyes of the Special Blonde line, the mixture must be made in a 1:2 ratio, that is, double the amount of oxidant Wella than koleston Perfect ME+ dye Cover gray hair or rinse 1 tone: 1 part of Koleston Perfect ME+ dye and 1 part of Welloxon Perfect 6% 20 volumes. Rinse 2 shades: 1 part Koleston Perfect ME+ dye and 1 part Welloxon Perfect 9% 30 volumes. Rinse 3 shades: 1 part koleston Perfect ME+ dye and 1 part Welloxon Perfect 12% 40 volumes. Rinse 3 shades with Special Blonde: 1 part Koleston Perfect ME+ dye and 2 parts Welloxon Perfect 9% 30 volumes Rinse 4/5 shades with Special Blonde: 1 part Koleston Perfect ME+ dye and 2 parts Welloxon Perfect 12% 40 volumes.