Schwarzkopf BlondMe Bond Enforcing Premium Lightener 9+ is a powder lightener with the unrivaled performance that’s able to lift both natural and colored hair up to 9 levels. What it does: It offers perfect neutralization, thanks to its anti-yellow agents which directly target the hair pigment that causes those warm yellow undertones. What else you need to know: It has a flexible mixing ratio (between 1:1.5 and 1:2.5), which means you can mix it to the consistency that works best for you and should be mixed with BLONDME Premium Care Developer for optimum bleaching and hair care. Integrated bonding technology. Up to 9 levels of lift. Helps to protect the hair fiber during development for minimized hair breakage. Anti-yellow agents to neutralize any warm undertones. Flexible mixing ratio. Easily workable consistency. Suitable for all technique.