This high-quality functional cosmetic liquid contains a high concentration of 10% of vitamin C derivatives, which are constantly used in skin care, from dry skin problems to creating beautiful skin. By delivering high concentrations of vitamin C derivatives to the stratum corneum, which has been prepared with a skin peel, it circulates throughout the skin, leading to beautiful, high-quality skin. In order to maximize the power of vitamin C, which is fragile, this product is formulated with two key points in mind: high freshness and high concentration. How to use Before using, put the powder of vitamin C derivatives in the bag into the cosmetic liquid bottle. Shake well to dissolve completely before using. Take an appropriate amount (the size of a 500 yen coin) into a clean palm. Gently wrap the entire face and apply it to blend it in. Apply multiple layers to areas of concern. Finally, allow the cosmetic liquid to penetrate thoroughly into the skin.