On the compatibility of glycolic acid and nicotinamide
Skin care practitioners in the world often doubt whether glycolic acid and nicotinamide can be mixed and used. The two have their own functions in the field of skin care. Glycolic acid is a fruit acid and the like, which has the power of skin rejuvenation, can exfoliate, promote skin metabolism, make the skin surface smooth and delicate, and can increase skin transparency and even skin tone. Niacinamide is a derivative of vitamin B, which can inhibit melanin transport, brighten the skin, adjust skin oil secretion, shrink pores, and strengthen the skin barrier.

However, the two are mixed, or there is a change. Glycolic acidic partial acid, nicotinamide may hydrolyze in an acidic environment to form niacin. Niacin may cause skin discomfort, such as redness, tingling, itching and other allergic signs. Therefore, be careful when mixing.

If you want to use both, there are ways to follow. First, use it on a time-sharing basis. Niacinamide can be used first during the day to strengthen the skin barrier and block external invasion, and then glycolic acid can be used at night to promote its renewal when the skin is repaired at night. Second, adjust its concentration. Choose low-concentration glycolic acid and niacinamide products, and slowly increase the dosage to see if the skin adapts. Third, add a buffering agent. Use a mild toner or essence as a base between the two to buffer their interaction.

In short, the way of skin care requires clear skin characteristics, careful selection of products, and clever ingredients to achieve good results and protect the health of the skin.