The compatibility of glycolic acid and vitamin C
The compatibility of glycolic acid and vitamin C has been debated widely, and it is the key to skin care. To understand, we must explore the nature of the two in detail.

Glycolic acid is an alpha-hydroxy acid with excellent exfoliation effect. It can loosen the connection between keratinocytes, promote the shedding of old keratin, make the skin surface renewed, radiant, and stimulate the synthesis of collagen in the dermis, making the skin dense and elastic.

Vitamin C is a strong antioxidant. In the skin, it can neutralize free radicals and protect the skin from oxidative damage, such as resisting UV-induced peroxidation reactions and preventing pigmentation. At the same time, it is also an essential factor for collagen synthesis, helping to maintain the structure and toughness of the skin.

As for the compatibility of the two, from a chemical point of view, glycolic acid is acidic, and vitamin C is stable in an acidic environment. However, it should be noted that high concentrations of glycolic acid may cause a significant decrease in the pH of the skin, or affect the activity of vitamin C.

Clinical practice has also proved. Some users combine glycolic acid with vitamin C to feel that the skin is brighter and more delicate, and the pigmentation seems to be reduced. However, there are also users who complain of short-term tingling, redness and other discomfort to the skin, which may be caused by differences in individual skin tolerance.

Therefore, skin care products compatible with glycolic acid and vitamin C should be tested for skin tolerance first. A small amount can be applied to the local skin first, and after observing that there is no discomfort, the scope of use should be gradually expanded. And the frequency of use should be gradual, from less to more, so that the skin can adapt to the process.

Generally speaking, the rational use of glycolic acid and vitamin C can bring many benefits to skin care. However, users should be careful according to their own skin type in order to achieve the best skin care effect and protect the skin from constant renewal.