CAFFEINE Caffeine is an alkaloid known for its stimulating properties. VITAMIN C Vitamin Cg, or Ascorbyl Glucoside, is a Vitamin C derivative. With antioxidant benefits, this form of Vitamin C is known to help boost radiance and smooth skin texture. ZINC Zinc Gluconate, a compound of the essential mineral Zinc, is known for its purifying and soothing properties. See full list