ColorLush offers ColorLush?s Color Boosts to give stylists total artistic freedom. Mix and concoct color palettes, create and conceive hair colors like you?ve never seen before. Artistry was at the forefront of the creation of ColorLush Demi Glosses. Take the shades and formulas you create to the next level by adding any one of the 5 Color Boosts offered in the ChromaSilk ColorLush line. Take your shade and color formulas to the next level by adding your desired Color Boost. For a boost of tonality, the suggested dosage is 1 full dose of the dropper per 2 oz. of color chosen. Example: 1 full dose per bottle of color (2 oz.) or oe a dose per half bottle of color (1 oz.). No extra ColorLush Developer is required. The more Color Boost you add, the more incremental the deepning in level and tonality.