The Ardell CS Gray Magic PK 24/DP is a liquid solution that speeds up hair color processing by improving hair condition and is the perfect choice for gray hair. It can be used with all brands of hair colors, and is ideal for preventing hair damage that can occur from changing hair colors often. Loaded with antioxidants and vitamins, it eliminates free radicals and provides a strong moisture balance, which rejuvenates the hair and enhances elasticity.