It is understood that the main role of nicotinamide is to whiten the skin, act on the skin, inhibit the production of melanin, reduce the transfer of melanin to the surface cells, thereby speeding up the skin metabolism, prevent the effect of melanin deposition on the skin. In general, the use of creams containing nicotinamide has some effect in reducing the number and area of spots. Nicotinamide stock solution has a better effect, but the concentration of nicotinamide stock solution is relatively high, so it is necessary to use the correct method, otherwise, it will cause skin intolerance and allergy symptoms.
Ceramide is an important component of the skin barrier, that is to say, the main role of ceramide is to protect the skin, and nicotinamide can strengthen its skin barrier function by increasing the content of ceramide in the cuticle, thus greatly reducing the skin water loss of the skin, improve and repair the skin barrier.
Nicotinamide improves the skin’s barrier function, which means it also can retain moisture and water. Regular topical use of 2% nicotinamide can greatly reduce skin water loss and enhance skin water retention. Generally speaking, nicotinamide liquid with a concentration of about 2% can be used as a moisturizer to lock in water deeply and maintain the normal water content of the skin.