Ardell Gray Magic Color Additive Helps you cover gray hair completely. Gray Magic works on even the most resistant gray hair. Compatible with all color tints, toners, and no-peroxide hair colors. 10 drops for every ounce of color. Gray Magic added to your color is all you need to cover the most resistant gray hair. Decrease fading and increase coverage. Helps color penetrate deeper into the hair shaft for longer lasting color. Adds intensity to any haircolor. Can be used with any haircolor, additive, toner, tints, and non-peroxide haircolor. Will not affect processing time. Features: * Semi-permanent hair color and conditioner * Rich in protein and organic conditioners * Enhances the shine and condition of your hair * Helps manage tangles and smooth split ends * Safe for chemically treated hair