Why is the use of cosmetic grade nicotinamide 2%~5%?

Nicotinamide, a B vitamin, is not only used in clinical medicine to treat stomatitis, glossitis and dermatitis, but is not yet regarded as a skin-care star in the beauty field.

Cosmetic grade nicotinamide is an application level of nicotinamide, mainly used in cosmetics and skin care products, the use of 2% to 5%, then the skin adaptability is better, this is found after countless studies, the use of too much easy to stimulate the skin, resulting in allergies, the use of too low will not play its role.

The safety of cosmetic grade nicotinamide is beyond doubt, but due to the presence of an impurity in cosmetic grade nicotinamide, nicotinic acid, it is the presence of nicotinic acid, may cause some people who use cosmetic grade nicotinamide skin care products to have allergic symptoms, such as itching, peeling, redness, etc. When buying cosmetics or skin care products, it is generally possible to use small samples, trial packages or small areas to test the adaptability of the skin, so as to avoid allergic symptoms when using large areas.

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