Brand from Japan: Kisocare. Achieve ideal skin that resists the signs of aging.A beauty serum containing 30% new vitamin C derivative.Vitamin C derivative: bisglyceryl ascorbic acid, glycerin, water (as a skin conditioning ingredient).Recommended for the following people:Concerned about how makeup blends with your skin.Want firmness in my skin.Want to improve the texture of my skin.Want to prevent my skin from drying out.Skin problems due to aging have increased.Point 1 - contains 30% nonionic vitamin C derivative.The new vitamin C derivative (bisglyceryl ascorbic acid) overcomes the weaknesses of vitamin C derivatives and is a beauty ingredient that not only provides the well-known functions of vitamin C such as improving texture and firmness, but also has excellent penetration and durability.Point 2 - highly formulated with a new vitamin C derivative that is low-irritation and easy to penetrate (to the stratum corneum).After extensive research into vitamin C, which is difficult to stabilize