Improve hairs strength and condition with color wows kale cocktail bionic tonic a leave in treatment that works to reinforce hairs internal bonds by over 50 in just one use when hair is colour treated the natural internal cysteine bonds that keep strands strong and resilient are broken down resulting in weakened vulnerable hair to help combat this a cocktail of sulphur rich sea kale protein building amino acids and b vitamins work to help reinforce internal bonds and significantly