Retinoic acid cream is a cream preparation of retinoic acid class, the main effect is to have some exfoliating properties on the skin, can regulate the skin keratinization situation, and has a good therapeutic effect on acne type acne. However, the drug has no effect on the removal of red acne marks. If patients apply the cream of vitamin A acid for a long time, it will stimulate the skin to make the skin red and may aggravate the acne marks. Therefore, patients with acne marks should go to a regular hospital and choose the appropriate medication for different acne and rashes according to the doctor’s guidance, instead of applying the same medication all at once.