L'oreal Professionnel Blond Studio Developer 20 vol (6%) 1LAchieve flawless blonding results with the LOral Professionnel Blond Studio Developer 20 Vol (6%). Specially formulated to work seamlessly with the Blond Studio lightening range, this professional developer ensures controlled lift, creamy texture, and even application from roots to ends. Its smooth, stabilised formula helps maintain optimal lightening performance while preserving hair condition throughout the process. Ideal for up to 2 levels of lift,