Generally speaking, the physical constitution and the secretion of sebum can decide whether the blains can attack the skin or not. In addition, other elements like the imbalance of hormones and the dietary bias can also affect the formation of blains. In order to prevent the formation of blains, people should follow the advice of the beauticians carefully. 

First, people should supplement vitamin C frequently to treat and prevent blains. Vitamin C plays an important role in restraining the secretion of sebum, preventing the pigmentation and accelerating the production of collagen. Therefore, it can improve the human skin internally. It can not only prevent blains but also remove the pockmarks from the face. It is necessary for people to absorb adequate vitamin C in everyday life.

Second, people should apply the skin care products containing the female hormones to the facial skin. The inadequate female hormones inside the human body can affect the normal metabolism and accelerate the dead cutin to block the pores. As a result, the blains can be caused. In order to improve the metabolism and prevent the blains caused by the excessive male hormones, it is necessary for people to protect the skin by applying the skin care products containing female hormones.

Third, the supplementation of can eliminate the blains from the skin. Tretinoin is the inducer of vitamin A, and it can effectively remove the dead cutin, accelerate the regrowth of the skin and accelerate the synthesis of collagen and hyaluronic acid, which can effectively deal with the present blains and prevent the possible blains.

Fourth, people should supplement various kinds of vitamins and mineral substances every day. These nutrients can be absorbed by the dietary therapy. The beta-carotene, vitamin B complex and mineral substances can help the skin regain the normal functions. Vitamin C can even resist oxidation for the skin. Therefore, the supplementation of vitamins and mineral substances can effectively strengthening the ability of the skin to avoid the formation of blains.

Fifth, it is necessary for people to eliminate the dead cutin and prevent the accumulation of dead cutin. The accumulation of cutin can block the pores and cause various skin problems, such as the blains. In addition, the dry air and high pressure can disturb the normal metabolism. In order to maintain the metabolism, it is also necessary to remove the dead cutin. The skin care products containing salicylic acid can help people realize the ideal effect.