Get gorgeous color with Wella Color Charm 20 Volume Creme Developer. Wella has been one of the most trusted brands in professional hair care for generations trusted for its fantastic results and gentle formulations. Wella Creme Developer performs seamlessly with all Wella Color Charm Permanent Liquid Hair Toner shades as well as other permanent hair color brands. The nourishing formula works together with your favorite color to thoroughly tint each strand for outstanding gray coverage from root to tip. The formulation doesn t strip hair of essential nutrients providing outstanding conditioning as you color with a gentle floral fragrance that makes processing more pleasant. Each bottle contains 3.6 fl oz of Color Creme developer; Wella Color Charm Permanent Liquid Hair Toner shades and other permanent hair color brands are sold separately.