Formulated with conditioning wheat germ protein Mix with color for up to 3 levels of lift Made for all hair types Refreshing fragrance The European formula of ion Sensitive Scalp 30 Volume Creme Developer contains ionic buffers and conditioning wheat germ protein to help guard against scalp sensitivity. This 30 volume developer ensures stronger smoother healthier hair during and after the hair coloring process. Mixes easily with chosen hair coloring product when lightening up to 3 levels.