Ascorbic acid, phosphoric acid, acid ester and magnesium are water-soluble vitamin C-derivatives. Although ascorbic acid is unstable in aqueous solutions and gradually breaks down due to the effects of elements such as light, oxygen in the air and heat, this product is a substance that is extremely stable in aqueous solutions and, once it enters the body, phosphoric ascorbic acid is separated by oxygen, leaving a simple substance to perform various tasks as an ascorbic acid. The substance features reducing effects, melanin production suppressing effects, reactive oxygen production suppressing effects and anti-aging effects that can be seen in the skin (e.g. Reduction of blemishes, wrinkles, sunburn, sagging and, roughness).