Matrix Color Sync Demi-Permanent Color No Ammonia! Discover the bold, rich full-bodied look of a tone-on-tone color. Hair is toned and polished; perfectly smooth with rich reflects from roots to ends. Includes shades for up to 75% grey coverage on light colors and up to 100% with darker hair color.*This is a professional product and should be used only by a trained individual. Seller is not liable for any adverse outcome resulting from the use of this product.