The COOL BLONDES Neutralizing Range with 3D Bond Creation Technology helps to build new bonds. The COOL BLONDES Neutralizing Range purple toning formulas help to remove brassiness and neutralize yellow undertones. Benefits: Gently cleanses and cares for the most delicate lightened and colored hair Helps to neutralize yellow undertones  Delivers targeted levels of cool pigments to maintain the tone direction, for improved blonde clarity  Leaves the hair feeling soft and silky