Koleston Perfect, the professional hair product that sets the standard for expertise and creativity in hair colour. - Trusted daily in over 100,000 salons worldwide to deliver predictable colour results and supreme hair care thanks to our highest quality ingredients. - Up to 100% grey coverage with root to tip evenness. Contains 25% conditioning agents and lipids for care and gentle-on-hair results. Up to 66% more shine compared to untreated hair. A mixing ratio of 1:1Pure, balanced colour results with natural depth and shine - ME+ reduces the risk of developing a new allergy to hair colour*Reduce the formation of free radicals for irresistible hair quality**Simple 1:1 mixing ratio - Up to 100% grey coverage - For professional use