Blondor Base Breakers are specifically designed for an express base breaking service while gently depositing tone in up to 10 minutes. This allows you to lighten the natural hair up to 1 level while neutralizing unwanted warmth on both the natural hair and the pre-lightened areas. Aiding in softening the light and dark areas of the hair for a more natural yet bright look and feel. All while being gentle on the hair. Choose from 2 different shades /19 Cool, for the softest result on both natural and pre-lightened hair, or /86 Extra Cool, for a more control on natural hair and intensity on pre-lightened hair.