Wella Koleston Perfect ME+66/44, Shade- DARK BLONDE INTENSIVE RED INTENSIVE uses an intense formula to enable the most intense, evenly balanced colour development. The Shine Guard gives your hair a lipid-based film to coat and protect your hair whilst illuminating it with vigorous shine. Wella Koleston Perfect ME+ is the only oxidative permanent hair dye molecule to replace PTD and PPD that reduces the risk of developing a new allergy to hair colour while delivering uncompromised colour performance. The colour that changes everything with ME+ Technology. Pure, balanced colour results with natural depth and shine. ME+ reduces the risk of developing a new allergy to hair colour. For people not allergic to hair colorants. Although 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 48 hours before each coloration. ME+ is present in specific shades of Pure Naturals, Rich Naturals, Vibrant Reds, Special Blondes and Deep Browns of the Koleston Perfect brand. Less hair damage colour after colour ** and helps neutralize free radicals in hair during colour formation. Simple 1:1 mixing ratio, up to 100% grey coverage, depending on the colour. Up to 3 or up to 5 levels of lift. ** Versus previous Koleston Perfect.