Balmain Professionnel Couleurs Developer is a 9% (30 vol) oxidising cream in 1000 ml, designed to ensure professional, even colour results. This gentle yet effective formula allows una perfect oxidation of the pigments, enhancing the brightness and longevity of the colour. Ideal for achieving vibrant tones and intense highlights, it ensures una optimal coverage without damaging the hair fibre. An essential product for those seeking high performance and hair care during colour treatment.