10vol: For deposit and tone.
             For grey coverage on 70%-100% grey hair.

20vol: Grey coverage, lightens between 1 – 2 levels.

30vol: Lightens between 2 – 3 levels.

40vol: Lightens between 3 – 4 levels.

Pure Crème Developers work in perfect synergy with Pure Evolve and Pure Lightening Powder.