Malibu C Head Lab Crystal Gel XL box of 6Our original science, now enhanced with additional benefits for your scalp! L ascorbic acid, the most potent and pure form of vitamin C, works alongside powerful chelators for the deepest removal of oxidized minerals, medications, and chemicals from the hair and scalp. This antioxidant rich formula also includes zinc to soothe and condition the scalp, and bentonite clay to provide a richer texture during application and scalp massage.