Koleston Perfect Base & Welloxon Perfect (1:1). Mix ratio: Three-tone lightening: 1 part Koleston Perfect, 1 part Welloxon Perfect 12%. Two-tone lightening: 1 part Koleston Perfect, 1 part Welloxon Perfect 9%. One-tone lightening or grey / white coverage of the same level or darker: 1 part Koleston Perfect, 1 part Welloxon Perfect 6%. - Perfect, uniform and modern colour results. Less hair damage with each application (compared to the previous version of Koleston Perfect. Applies to Koleston Perfect with Pure Balance technology). ME+ reduces the risk of developing a new allergy to hair dyes (for people who are not allergic to hair dyes). Although the risk of developing new allergies is reduced, a risk of allergic reactions remains, which can be serious. Perform an allergy test 48 hours prior to any colouring. Carefully follow the safety instructions (English language not guaranteed). If you have already experienced allergic reactions to hair dye in the past, you should not colour your hair. ME+ is contained in certain nuances of the Koleston Perfect brand’s Pure Naturals, Rich Naturals, Vibrant Reds, Special Blondes and Deep Browns.

you should not colour your hair. ME+ is contained in certain nuances of the Koleston Perfect brand’s Pure Naturals, Rich Naturals, Vibrant Reds, Special Blondes and Deep Browns. Less hair damage with each use (compared to previous versions of Koleston Perfect. Applies to Koleston Perfect with Pure Balance technology). ME+ reduces the risk of developing a new allergy to hair dyes (for people who are not allergic to hair dyes). Although the risk of developing new allergies is reduced, there is still a risk of allergic reactions,. which can sometimes be severe. Perform an allergy test 48 hours prior to any colouring. Carefully follow the safety instructions (English language not guaranteed). If you have already experienced allergic reactions to hair dye in the past,. The colour has been developed with ME+ technology. Perfect, uniform and modern colour results.