Nicotinamide is also a derivative of vitamin B3, which can be said to be a very important member of vitamin B family. For skin, nicotinamide can whiten and lighten spots, brighten skin tone, repair skin barrier, resist aging, replenish water and moisturize, so more and more skin care products attract female friends to buy in the name of nicotinamide. Only frequent and excessive use of nicotinamide will cause certain losses to the skin, and the higher the concentration of nicotinamide, the greater the irritation, and it is easy to cause allergic reactions after use.
Although nicotinamide has brought many positive effects to the skin, the extremes meet. Improper use of nicotinamide will have side effects on the skin, such as itching and redness, which are usually caused by skin intolerance and allergies. I would also like to remind female friends that when using nicotinamide for the first time, it is necessary to conduct an allergy test to establish skin tolerance.
In fact, too much nicotinamide can not be completely absorbed by the skin at one time, and it may also damage the skin protection barrier, which is not worth the candle. In addition, there is no need to buy nicotinamide products with high concentration and moderate dosage, which are suitable for your skin. And pay attention to observe the skin condition during use, and stop using it immediately if there are serious adverse reactions.