On the compatibility of BHA and glycolic acid
The way of skin care, the combination of ingredients, is related to efficacy and skin comfort. This paper discusses the compatibility of BHA and glycolic acid to make sense and guide everyone's skin care methods.

BHA, known as salicylic acid, fat-soluble, can enter hair follicles, clear lipids, inhibit propionibacterium acne, make skin smooth, and have anti-inflammatory properties. Glycolic acid is the first fruit acid, with good water solubility, can quickly dissolve interkeratinic adhesives, promote exfoliation, increase skin metabolism, rejuvenate skin, and reduce wrinkles and light spots.

However, although the two have their own strengths, they must be careful when compatible. Both have the properties of exfoliation, and the same use will increase the strength. Moderate compatibility can efficiently rejuvenate the skin, and if the skin is reborn, the luster will be even. However, if it is excessive, the stratum corneum will be damaged, the skin will lose its barrier, and sensitization, dry itching, redness and other diseases will follow.

If you want to combine BHA and glycolic acid, you should follow the quality of the skin. Oily, tolerant skin, or you can try it. At the beginning, the concentration should be low, and it should be sparse when used. Try it with a single ingredient first, and then gradually combine it after observing the skin's response, without discomfort. Start once a week, and gradually increase to two to three times a week depending on the skin's tolerance. Dry, sensitive skin, thin stratum corneum, weak tolerance, the use of both, the risk is quite large, if not a doctor's advice, it should be avoided.

The method of using time is also exquisite. After cleansing, hydrate first, wait for the skin to moisturize, and then apply the product. It can be used separately in the morning and evening, such as glycolic acid in the morning and BHA at night, to avoid its excessive irritation. After use, it is necessary to use heavy sun protection. Both increase the sensitivity of the skin to light, neglect sun protection, and cause skin damage.

In summary, BHA is compatible with glycolic acid, and when used properly, it can be a powerful tool for skin care; if used improperly, it will cause harm to the skin. Therefore, people who take care of their skin should know their skin in detail and act prudently in order to obtain its benefits and avoid its harm.