I think what you are asking is about whether you can use ordinary glycolic acid every night. Glycolic acid is lively and has the power to rejuvenate the skin. However, the tolerance of the skin varies from person to person.

If the skin is strong and well tolerated, you can try to use it every day at first to check the skin's response. Wait for the skin to gradually adapt, or you can increase the frequency. However, even if the tolerance is strong, it is not recommended to use it every night.

It takes time to cover the skin. Using glycolic acid every night may cause the skin to peel and cause redness, itching, and dryness. If the skin is already sensitive and weak, using it every night is tantamount to adding cream to the snow, damaging the skin barrier and sensitizing even more.

Therefore, if you want to use glycolic acid, you should take the skin's feelings as the basis, step by step, and do it cautiously.