On the Compatibility of Retinol and Glycolic Acid
People in modern times have paid great attention to the technique of skin care. Retinol and glycolic acid are both commonly used ingredients in skin care. However, whether the two can be mixed and used is a matter of concern to everyone.

Retinol, which is active in nature, is beneficial to the metabolism of the skin, can help the stratum corneum to renew, promote collagen production, make the skin firm and smooth, reduce fine lines, and glow. Glycolic acid, one of the fruit acids, has the ability to gently exfoliate, dredge pores, improve dull skin tone, and make the skin delicate and shiny.

However, if the two are not properly compatible, there may be drawbacks. Retinol is weakly acidic, and glycolic acid is more acidic. Mixing the two may cause local acidity of the skin to be too strong, irritating the skin. Those with sensitive skin may experience redness, swelling, tingling, and itching. And retinol is chemically active, mixed with glycolic acid, or triggers a chemical reaction, causing the ingredient to be inactivated and impairing the effect of skin care.

If you want to use both of these, do it in sequence. You can try a single ingredient first, and then match it when the skin adapts. Use glycolic acid products first, at intervals of several weeks, until the skin tolerates it, and then introduce retinol. And when using it, the starting concentration should be low, observe the skin's reaction, and then adjust it as appropriate. It is also necessary to pay attention to the use period. Glycolic acid is suitable for use at night because of its photosensitivity; retinol is also better at night, and strict sun protection is required during the day.

In short, the mixed use of retinol and glycolic acid should be used with caution. Carefully observe the skin characteristics and use it in the correct way to avoid harm and promote profit, and achieve the ideal skin care effect.