On the method of combining glycolic acid and retinoic acid
If you want to make good use of glycolic acid (Glycolic Acid) and retinoin (Tretinoin) for the skin, you need to understand the reasons and follow the method. Glycolic acid is a kind of fruit acid, mild in nature, often can dissolve keratin and promote metabolism, so as to rejuvenate the skin. Retinoic acid is very effective in regulating keratinocyte differentiation, anti-wrinkle and acne. However, when the two are used together, you must be cautious.

When using it for the first time, it is advisable to try it on a small scale first. Take a little glycolic acid product and apply it to the skin in the wrist or behind the ear. After a few days, observe whether there is any discomfort, such as redness, swelling, itching, etc. If there is no abnorm The same is true for retinoic acid. Try a small test first to check the tolerance of the skin.

As for the application sequence, there are two common methods. First, after cleansing at night, when the skin is dry, apply a thin layer of retinoic acid first, wait for it to dry and absorb, and then apply glycolic acid products after about half an hour. Second, you can also use glycolic acid first, wait a moment, and then use retinoic acid. However, no matter what method, you need to pay attention to the interval time, so that the skin has a cushioning machine.

The frequency of application should be less in the early stage. It can be once a week first, and then gradually increase to two to three times a week when the skin adapts. Do not rush for success, and use it too frequently to avoid skin intolerance, causing allergies, dryness, and desquamation.

With these two, the skin is easy to dry. Therefore, it is necessary to pay attention to moisturizing, especially during the day to do a good job of sun protection to prevent ultraviolet damage and damage to the skin.

In short, the use of glycolic acid and retinoic acid to protect the skin together must be tolerated by the skin, step by step, in order to achieve the desired effect and obtain the effect of skin rejuvenation.