There are actually many ways to eliminate acne, as follows: 1. medication: such as drugs containing salicylic acid, drugs containing retinoic acid. If acne turns into inflammatory papules or even pustules, you need to use antibiotic drugs, such as fusidic acid, Bactrim, and you can also apply clotrimazole. 2. Photodynamic therapy: Some acne is of the cyst type, and the effect of medication may not be good, so you can use photodynamic therapy at this time. Photodynamic therapy is very effective for moderate to severe acne, not only can make the cysts disappear, but also can make the sebaceous glands shrink, which can prevent acne re-emergence, so moderate to severe acne can use photodynamic therapy, and now there is also red and blue light irradiation method to make moderate to mild acne disappear. The main reason for acne is the presence of acne, so the first thing to do is to prevent acne. To prevent acne, you need to pay attention to the fact that when you wash your face normally, you use warm boiling water to wash your face. Warm boiling water dissolves the oil, especially the oil at the mouth of the follicle, and then you use a weak acidic cleanser to wash your face, which can minimize the occurrence of acne.