Vitamin c ethyl ether is a derivative of vitamin C. It retains the redox effect of vitamin C and is very stable. It is a non-discoloring vitamin C derivative.

3-O-ethyl-L-ascorbic acid or ethyl ascorbic acid is a molecule produced by modifying ascorbic acid, commonly known as vitamin C. This modification is to increase the stability of the molecule and enhance its transport through the skin, just as pure vitamin C is easily degraded.

Vitamin C ethyl ether is a lipophilic and hydrophilic vitamin C derivative, which not only makes it extremely convenient to use in formulas, but also makes it easier to penetrate the stratum corneum and enter the dermis.