Ardell Gray Magic Color Additive for Hair Dye - Anti-Fade Gray Hair Coverage Booster Drops, Long-Lasting Hair Color Enhancer, 1 ozGray Hair Coverage Booster: Ardells Gray Magic Hair Color Additive helps you cover gray hair completely. Boosts color penetration for complete coverage of resistant gray hair. Prolongs Color Vibrancy: Prevents fading and adds intensity to any hair color. Helps color penetrate deeper into the hair shaft for longer lasting color. Universal Compatibility: Compatible with any hair color, additive, toner, tints, and non peroxide hair color and will not