Why would someone be intolerant to nicotinamide?

Nicotinamide is a form of vitamin B3, and nicotinamide is usually divided into cosmetic grade nicotinamide and medical grade nicotinamide according to the different uses. As the name implies, cosmetic grade nicotinamide is mainly used in the production of cosmetics and skin care products, while medical grade nicotinamide is used for medical purposes.

Today we are going to introduce cosmetic nicotinamide, a cost-effective and popular ingredient, which can meet our daily skin care, improve and protect the skin, and high safety, but is not expensive oh.

At present, the nicotinamide we use is mainly obtained through chemical synthesis, and the main impurity of non-pure cosmetic nicotinamide is nicotinic acid. In addition to people who are allergic to nicotinamide, the main cause of nicotinamide intolerance is the impurity of nicotinic acid. Therefore, the use of high-purity nicotinamide skin care products produced by large companies is relatively better.

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