According to tretinoin manufacturer, vitamin A acid is a derivative of vitamin A, and the tartaric acid is synonymous of various acidification (including glycolic acid, lactic acid, etc.), to the product concentration in the market, both of them can make the cuticle peel, smooth skin; vitamin A acid, even deeper into the epidermis and dermis layer to improve a variety of physiological functions of the skin.
Both may cause dry skin, peeling, redness, itching, and tingling and other phenomena, but vitamin A acid in the continued use of a period of time (about one to two weeks), most of them can be adapted; while the larger the tartaric acid concentration, the reaction is stronger, and then unable to adapt. A acidic dermatitis (dry, peeling, redness, swelling, itching, and other symptoms); each occurred in varying degrees, and some people simply will not happen three days to one month after the use of vitamin A acid may occur. Some people did not dare to use uncomfortably. Based on clinical observation report, the majority of people are mild to middle, lasts about 1 to 2 weeks, will slowly adapt and the symptoms disappeared.
Spots in patients with early stages of using vitamin A acid, about 5% of people will become more black, but continue to use after two months will gradually fade and do not have to worry about. This situation does not relate to the sun, whether with or without the use of vitamin A acid was caution should be good sunscreen.
Periorbital skin was fragile, easy to dry and rough, wrinkled hyperplasia, eyes bleak. Vitamin A acid is an extremely effective horny skin conditioning agent, coated in periorbital skin everyday night, perseverance, will have an unexpected effect. If touch the eyes you will feel tingling, but lossless the corneas structure, the initial use because the cuticle refresh, so the wrinkles more obvious around the eyes, need about 2 to 7 days to adapt. A acid dermatitis peeling cuticle re-adjust the level and arranged, make the skin smooth and detailed steps. But everyone with varying degrees, not have to go through desquamation to improve problem skin; peeling phenomenon usually lasts two to six weeks, and then disappear naturally. In case of excessive rubbing or forcibly torn off dander, which would stimulate the cuticle adjusted again, re-stripping, and thus extend the A acidic dermatitis reaction. Meanwhile, steam the face, do face, wash your face with warm water or in the heat of the environment are also easy to make the skin redness and peeling phenomenon is more serious.
Vitamin A acid has been recognized as the skin vitamin for a long time, was originally used to treat acne, but cosmetic raw material suppliers found that it can also improve fine lines and wrinkles of the face. Although the effect is very good, but the drawback is that can irritate skin and cause skin redness and peeling. Used continuously for 12 weeks, the overall texture is much improved, but also reduces the fine wrinkles, especially in the eyes area.
Source:http://www.cosprm.com
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