Many young people find themselves with acne on their foreheads. Acne is also known as acne, and the treatment for acne varies by cause. Generally mild acne is treated with topical retinoic acid creams, which can regulate follicle keratinization, calm existing acne and prevent new acne from forming, but the side effects can lead to redness, dryness and flaking, and need to be used at night. For moderate to severe acne, oral antibiotics, isotretinoin, and topical peroxymethylphenidate and retinoic acid creams are required, and female patients can also take anti-androgen preparations. Acne treatment can also be treated with light therapy, salicylic acid peeling, acne needle clearing, etc. However, it should be operated by a professional doctor to avoid excessive treatment damage to the skin.