Lactobionic Acid is the third generation of fruit acid, it is not as irritating as the first generation, and it is better than the second generation of fruit acid for cleaning pores. It is composed of a molecule of galactose and a molecule of gluconic acid, and it is a polyhydroxy biological acid. The structure of lactobionic acid has eight groups of hydroxide water groups, which can hold a large number of water molecules. It not only has the effects similar to fruit acid (peeling keratin, removing blackheads, preventing and reducing closed mouth, shrinking pores, removing acne, etc.), but also anti-oxidation, anti-aging, whitening and other effects. It is an alpha-oxyacid with antioxidant activity and is used in the development of skin cosmeceuticals.