Nicotinamide has so many benefits to the skin, can everyone use it? I think the answer is no, the skin itself has a lot to do with the effect of nicotinamide.
In different nicotinamide products, the amount of nicotinamide is mostly different, generally speaking, the nicotinamide content used in skin care products is 2%~5%, and if the content is below 2%, the effect of nicotinamide is difficult to play out, the more the effect is better? No, high levels of nicotinamide can easily lead to allergies, especially on sensitive skin. Therefore, when buying skin care products containing nicotinamide, it is safer to buy them through proper channels.
Some skin care products, not only add the cosmetic grade niacinamide but also added a certain amount of moisturizer and penetration promoter, this major can have the effect of increasing the skin absorption of nicotinamide, in fact, these ingredients for sensitive skin are not so friendly, so, before you can use testing allergy is the recommended method, can help us avoid the large area of allergies.