Wella Professionals' purest permanent hair colour ever with Me+ Technology! Koleston Perfect is the first professional hair colour brand to feature breakthrough technologies. Features Pure, 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 Up to 5 levels of lift *For people not allergic to hair colourants. Although the risk of developing a new allergy is reduced, there remains a risk of allergic reactions that can be severe. Always ask your stylist to perform an Allergy Alert Test 48h before each colouration. Strictly follow safety instructions. If you have ever experienced an allergic reaction to hair colourants, you should not colour. ME+ is present in specific shades of Pure Naturals, Rich Naturals, Vibrant Reds, Special Blondes and Deep Browns of the Koleston Perfect brand. **Valid for Koleston Perfect with Pure Balance Technology.