L’Oreal Oxydant 40-Volume 12% Creme Developer mixes easily with chosen hair coloring product to provide permanent color change. Has a very strong lightening action without color deposit. Use 40 Volume for lifting action up to 4 levels or for use with lightening products. The rich, creamy formula gives you easy application and beautiful uniform results every time.
Mix in Creme 40 Volume Developer in amount recommended in chosen hair coloring product.