Schwarzkopf BLONDME Developer 6% / 20 Vol is a new generation of lightener that provides up to 8 levels of lift. 6% strength is ideal for conventional bleaching and toning on naturally light (level 8 or above) blond hair. It specially formulated to partner BLONDME bleach and colour shades. It's an oil developer with a caring formula Powered by the Advanced Bonding System that can be tailored to any clients needs.