L'Oreal 20 Volume Developer

Fully Stabilized Formulas - Freshness Assured
Beautiful, uniform color results every time
Rich, creamy formula for easy application
Use 20 Volume for lifting action up to 2 levels
Use 30 Volume for lifting action up to 3 levels
Use 40 Volume for lifting action up to 4 levels or for use with lightening products
Available in 8 oz. or 16 oz.