"Ask if you can use glycolic acid"

The doctor said: "If you want to know if you can use glycolic acid, you must review the situation in detail. If the skin is peaceful, free of sores and allergies, and you want to beautify the skin, you can try it. However, the glycolic acid is strong, and those with delicate skin and sensitive skin should be cautious. Use a little first, apply it to the skin inside the arm, and wait for a day to see if it has redness, swelling, and itching. If so, you must not use it; if not, you can use it gradually, and the dosage should be small and the frequency should be low. When the skin adapts, you should increase it. If you are suffering from a serious illness, your internal organs are weak, your qi and blood are not adjusted, or you are applying other medicines, you must also consult a doctor to cut off any harm. Don't use it rashly, for fear of causing various diseases. "