Vitamin C Ethyl Ether is a widely used vitamin C derivative. It is not only very stable in terms of chemical properties and does not change color, but also a hydrophilic and lipophilic substance, which greatly expands the application range of Ascorbic Acid, especially in daily chemical applications. 3-0-Ethyl Ascorbic Acid Ether can easily pass through the stratum corneum and enter the dermis. After entering the body, it is easily decomposed by the biological enzymes in the body to play the biological role of Ascorbic Acid Powder.