Blisters are actually blisters, and the causes of blisters on the face include contact dermatitis, eczema, and herpes simplex. 1. Contact dermatitis: the skin can cause allergic or irritant reactions after contact with certain sensitizing or irritating substances. It is often manifested as pinpoint dense papules and blisters. Patients can be treated with anti-allergic drugs such as cetirizine hydrochloride tablets, chlorpheniramine maleate tablets, ketotifen fumarate tablets, etc., and pimecrolimus ointment and other medications can also be used in combination under the guidance of a doctor. At the same time, you need to avoid all the suspected causative factors. 2. Eczema: Eczema is a very common chronic inflammatory disease, mainly manifested in the head, trunk, limbs and other parts of the erythema, papules, small blisters, accompanied by itching. If you have eczema on your face, you can use zinc oxide ointment, hydrocortisone cream, and dinaid cream according to medical advice. If itching is obvious, oral antihistamines such as loratadine and cetirizine can be used. 3. Herpes simplex: after herpes simplex virus infection, there will be clusters of blisters on the skin and mucous membranes, accompanied by burning sensation and other symptoms, this situation can be used according to the doctor’s instructions, such as acyclovir tablets, famciclovir tablets, vaxilovir hydrochloride tablets and other drugs, combined with the external use of acyclovir cream, interferon gel and other drugs. There are many reasons for blisters on the face, so it is recommended that patients should consult a doctor in time, cooperate with the doctor to find the cause of the disease, and pay attention to the use of drugs need to follow the doctor’s instructions.