Color Perfect Stabilized Creme Developer - 20 Vol (6%) - 128 oz

What it is:
Stabilized Creme Developer

What it does:

• 20 Vol Creme Developer is used for standard formulations, up to 2 levels of lift and coverage of gray/white hair.
• 40 Vol is used only when extra lightening is desired, from 4 to 5 levels of lift.