Cosmetic-grade nicotinamide has so many benefits for skin, is that for everyone? Of course not. It’s the skin itself and the product.
Each cosmetic grade nicotinamide products, the amount of cosmetic grade nicotinamide used will have a certain difference, generally speaking, the content is below 2%, the role of cosmetic grade nicotinamide is difficult to play, the content of 2% products are more, there are more than 4%, the more the content, the more effect? Not so, the high content of cosmetic grade nicotinamide is easy to cause allergies, especially sensitive skin, in the purchase of cosmetic grade nicotinamide products, should understand the content of the ingredients, it is more helpful to use.
Part of skin care products not only add the cosmetic grade niacinamide, also add some moisturizing factor and promoting agent, main purpose is to increase the skin absorption of cosmetic grade niacinamide, in fact, these ingredients for sensitive skin are not so friendly, so the test allergy is a recommended method, can help us avoid allergic phenomenon in a large area.
