Topical drug of acne as the group of vitamin A acid make the skin sunburn easily. Actually the drug causes the outer skin or scurf layer is thin down.
Epidermis as scurf layer usually can protect the sunburn. Therefore, if using drug group as vitamin A acid for treating acne and wrinkles or visible signs of aging. Need to apply the drug before bedtime at night. Should avoid the sun and use sunscreen regularly.
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