KOLESTON PERFECT PERMANENT COLOUR THE COLOUR YOU CAN TRUST: Formulated with ME+ dye technology to reduce the risk of developing a new allergy to hair colour1 With Ultra precision colour technology it provides pure, balanced colour results with natural depth and shine Up to 100% grey coverage Formulated with Metal Purifier. Help to prevent hair damage caused by metals. Your best ally to get ultra-precise colour results and keep healthy looking hair colour after colour. No need to use pre-treatment to neutralize metal when colouring with Koleston Perfect Dermatologically tested2 Vegan3 Globally committed to no animal testing4 Up to 85%5 naturally derived ingredients6 USAGE INSTRUCTION:Simple 1:1 mixing ratioUp to 5 levels of lift 1. FOR PEOPLE NOT ALLERGIC TO HAIR COLOURANTSAlthough the risk of developing new allergy is reduced, there remains a risk of allergic reaction 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.2. Dermatologically tested for skin irritation – an allergic reaction may still occur – always perform an Allergy Alert Test.3. Excluding Special Blonde.4. Wella company is a member of the International Collaboration on Cosmetics Safety.5. From 80% to 85% depending on the shade except Special Blonde.6. Except Special Blonde.