SoColor Pre-Bonded is a permanent haircolor with exclusive bond-protecting concentrate that protects the inner hair structure - so you can maintain the integrity of the hair, color after color. Our formulas are Pre-Blended with background + reflect—so you can neutralize every underlying pigment. Pre-Paired: Our permanent and demi-permanent oxidative dyes are perfectly matched—so you can achieve seamless, root-to-tip color, that lasts and fades on tone.