milk_shake Colour Maintainer Shampoo is a hydrating and protective shampoo designed specifically for colour treated hair. milk_shake have created this colour shampoo to improve the beauty and vitality of colour treated hair. Milk proteins and milk_shake‘s patented Integrity 41 complex are the key ingredients and ensure this shampoo repairs the hair cuticle whilst protecting colour against free radicals. The hair is also protected from harmful sun rays.