On the Compatibility of Glycolic Acid and Salicylic Acid
Fuglycolic acid and salicylic acid are both acids for skin care. However, whether the two can be used together, there are different opinions, and it needs to be studied in detail.

Glycolic acid is an alpha-hydroxy acid with small molecules and good permeability. It can loosen the connection between keratinocytes, promote the metabolism of the stratum corneum, and make the old and waste keratin on the surface of the skin fall off, thus making the skin smoother, more delicate and radiant. And to a certain extent, it can stimulate the synthesis of collagen in the dermis and help the skin restore elasticity.

Salicylic acid is a beta-hydroxy acid, which has good lipophilicity and can penetrate deep into the pores. The main effect is to clean up the accumulation of oil and dirt in the pores, improve the clogging of pores, and have a great effect on skin problems such as acne and acne. At the same time, it also has anti-inflammatory properties and can relieve the skin's inflammatory response.

As for the compatibility of the two, it needs to be carefully considered. On the one hand, the two have slightly different mechanisms of action. Glycolic acid focuses on the surface keratin metabolism, and salicylic acid focuses on pore cleansing and anti-inflammatory. If properly matched, it may play a synergistic effect and improve skin problems in an all-round way. For example, for oily and acne-accompanied skin, first use glycolic acid to improve skin roughness, and then use salicylic acid to clean pores, or achieve better skin care effect.

However, on the other hand, both are irritating. Glycolic acid can thin the stratum corneum of the skin, and salicylic acid may also irritate the skin. If used at the same time, it may cause excessive skin irritation, redness, tingling, desquamation and other uncomfortable symptoms, especially for people with sensitive skin, more caution is required.

Therefore, if you want to use glycolic acid and salicylic acid together, you should first clarify your skin characteristics. For sensitive skin, you should try it on a small area first to observe whether there are any adverse reactions. If the skin is well tolerated, the concentration and frequency should also be controlled during initial use. Start with low concentration and low frequency. For example, choose the concentration of glycolic acid below 5%, and the concentration of salicylic acid below 1%. Use it 1-2 times a week. After the skin adapts, adjust it as appropriate.

In short, the compatibility of glycolic acid and salicylic acid needs to be carefully judged and used reasonably according to personal skin conditions in order to achieve the ideal skin care effect on the basis of ensuring skin safety.