When exploring whether ordinary glycolic acid can be used with niacinamide, it is necessary to understand the characteristics of both. Glycolic acid, a type of fruit acid, has exfoliating effect, can accelerate skin metabolism, make skin smoother and more delicate, but it will also make skin more sensitive. Niacinamide can effectively improve skin dullness, shrink pores, and strengthen skin barrier.

From a chemical point of view, the two usually do not produce adverse reactions. However, because glycolic acid can increase the acidity of the skin, niacinamide may be converted to niacin in a low pH environment, or cause skin discomfort, such as redness, tingling, etc.

Therefore, before use, it is recommended to try it on a small area of skin to observe whether there is any discomfort. If the skin tolerates it well, you can gradually try to use it together. When using, it is recommended to start with low-concentration products, and pay attention to the frequency of use, and do not overuse it to prevent skin damage. At the same time, if the skin is uncomfortable during use, you should immediately stop using it and seek professional advice. In this way, you can not only play the effects of both in the skin care process, but also protect the health of the skin.