Schwarzkopf IGORA Vario Blond Cool Lift is a bleach additive that gives secure, cool blonde highlights, even on naturally dark hair. It is designed to work in partnership with a powder bleach like IGORA Vario Blond and provides lift and neutralisation in a single step. Recommended mixing ratio is 10–15 ml of Cool Lift with 35 g of bleach and 50 ml of IGORA Royal Oil Developer (developer strength depends on starting hair colour). Processing time is 20–60 minutes depending on your required level of lift.