ion Sensitive Scalp 20 Volume Creme Developer, Ionic Buffers and Conditioning Protein to Help Scalp Sensitivity, 4 Ounce;

The European formula of ion Sensitive Scalp 20 Volume Creme Developer contains ionic buffers and conditioning wheat germ protein to help guard against scalp sensitivity. Ensures stronger, smoother, healthier hair during and after hair coloring. Mixes easily with any chosen hair coloring product when lightening up to two levels.