L'Oréal Professionnel Dia Color is an ammonia-free demi-permanent hair colour that delivers up to 6 weeks of glossy colour with 3x more shine*. Delivering up to 70% grey coverage, the 100% true-to-tone colour is the perfect second step after a lightening, colour or coverage service, making it perfect for neutralising lightened hair and refreshing faded lengths. Melanin Gap Filler Technology fills gaps from lost melanin and reinjects colour inside the hair fibre. Hair is balanced and 30% more conditioned for healthier-looking hair and natural looking results*. All shades are intermixable for truly personalised colour results. The acidic gel-crème texture ensures easy mixing, application and rinsing.