People, especially women, always choose various kinds of skin whitening products to beautify the skin. However, few people pay attention to the compositions contained in these products. It is also difficult for them to know the exact roles played by the compositions. The main compositions in the products will be introduced as follows. 

Vitamin C contained in the products plays an important role in resisting oxidation and recovering melanin. It is safe and stable for people to make use of. The whitening effect of vitamin C keeps a close relationship with its structure and state. The L-typed vitamin C can beautify the skin better.

As a kind of derivant of vitamin C, the glucoside of ascorbic acid can also help the human body whiten the skin. Because of the instability, vitamin C usually exists in skin whitening products in the form of its derivants. The glucoside of as ascorbic acid can not only whiten the skin, but also resist oxidation. The density of the glucoside used to produce the products should be controlled within 2%.

magnesium of ascorbic acid is also rather popular among all the compositions which can whiten the skin for the human body. It can be used safely and stably. The density of phosphate magnesium of ascorbic acid should be controlled less than 3%.

can widely exist in the animal liver, yeast and rice bran. With a kind of high stability, it can not be destroyed by acid, alkali and high temperature. The lack of nicotinamide inside the human body can cause pellagra. Nicotinamide is usually used to whiten the skin in skin whitening products.

is usually abstracted from plants. It can rapidly act on the skin to make the skin white. However, it can stimulate the skin to some degrees. Therefore, the density of arbutin in the skin care products should be controlled strictly. Generally speaking, the density of arbutin in various products should be regulated at 7%.

In addition, some other plant extracts can also be used to produce the skin whitening products, as they are safe and soft. The long-term use of these extracts will not hurt the human skin. However, the whitening effect can only be realized after a rather long time. The extracts can beautify the skin by restraining the activity of tyraminase. Generally speaking, the extracts of the plants like cucumber, angelica, moutan bark and pawpaw are widely used during the production of skin care products.