It is useless to use paracetamol for face allergy. Paracetamol is divided into three dosage forms: tablets, drops and injections, which can be taken orally or injected intramuscularly and are absorbed by the body to produce an antagonistic histamine effect, which cannot enter the body through the skin by external application and cannot play an effective anti-allergic role. In case of facial allergy, the first thing you need to do is to clean your face. You should immediately wash your face gently with warm and cool water to remove the substances that cause facial allergy. At the same time, a towel soaked in cold water can be applied to the uncomfortable part of the face to relieve the symptoms through continuous cooling. Next, use boric acid solution as a wet compress, topical zinc oxide cream, etc. If the inflammatory reaction is severe, appropriate topical hormonal drugs, such as hydrocortisone butyrate cream, can be used. At the same time, oral anti-allergy drugs such as paracetamol and dicloretin need to be taken, and the inflammatory reaction can be combined with anti-inflammatory drugs such as compound glycopyrrolate tablets. During the treatment, attention should be paid to keep away from allergens to prevent aggravation or recurrence of allergy. During the treatment of allergies, attention should be paid to avoid spicy and irritating foods and maintain a light diet. You should also reduce skin care steps, disable cosmetics, and pay attention to avoiding light.