Vitamin C is widely used in skincare products as it is a well-known whitening ingredient and also has the function of promoting collagen synthesis. Comparing the Vitamin C derivatives, ascorbic acid is extremely unstable and not easily absorbed by the skin.

Present market shows, the Vitamin C in Western skincare products mostly are vitamin C derivative(Magnesium Ascorbyl Phosphate, Sodium Ascorbyl Phosphate, L-Ascorbyl 2-Glucoside, Ethyl Ascorbic Acid, Ascorbyl palmitate, etc), and the skincare products of Korea are Vitamin C(ascorbic acid). Forcast Korean skincare products brands will use Vitamin C derivatives soon.