Allergies, redness, edema, and itching around the eyes are usually caused by local skin contact with allergens. Common allergens include cosmetics, skin care products, hair dyes, shampoos, cotton wool, willow floss, smoke, and dust. The skin of the eye is relatively tender and exposed to the body surface, it is easy to come into contact with the allergens in the surrounding environment, thus triggering an allergic reaction, resulting in localized redness, swelling, itching and other symptoms, common allergens are hair dyes, shampoos, skincare products, cosmetics, smoke, dust, cotton floss, willow floss, and so on. Patients should pay attention to look for allergens in their life and try to get out of contact with allergens in order to minimize the risk of allergy. If the skin around the eyes is already allergic, you can apply topical hormone eye ointment for treatment, such as commonly used tetracycline cortisone eye ointment, tobramycin dexamethasone eye ointment and so on. The specific medication should be under the guidance of a doctor. The redness, swelling and itching around the eyes are recommended to go to the hospital in time for examination and then use the medication.