Acne marks belong to the pigmentation after inflammation, there are two kinds of red acne marks and black acne marks, and Vitamin A acid cream has some effect on removing red acne marks, but it is not effective for black acne marks. The main ingredient of retinoic acid cream is retinoic acid, which is often applied externally for the treatment of acne vulgaris, especially blackheads and pimples lesions, senile, solar or drug-induced skin atrophy, ichthyosis, and a variety of keratosis pilaris and hyperpigmentation skin diseases and other skin diseases. The main efficacy of Vitamin A Acid Cream is to exfoliate and regulate keratin, which can lighten red acne marks. For black acne marks also have a certain peeling effect, but the effect is not good, relatively strong irritation, it is recommended that according to the condition of the doctor’s orders to choose a more appropriate acne mark drugs such as cumene glycoside ointment, hydroquinone cream, and so on. It should be noted that the improper use of retinoic acid cream may produce skin irritation, such as burning sensation, erythema, flaking, etc., in the use of medication, should strictly follow the doctor’s instructions to use medication, do not blindly self-medication. Contraindicated for women in the first 3 months of pregnancy. Acute or subacute dermatitis, eczema skin disease patients are prohibited.