Cosmetic allergies usually recover in about two weeks with aggressive treatment, but there is some individual variation. Cosmetic allergies can be caused by an allergy to heavy metals or certain ingredients, causing a red rash, tightness and itching of the skin. If the patient’s symptoms are mild, washing the face with water is sufficient, and the symptoms usually resolve on their own within a week or so. If the patient has a large facial erythema, swelling and eyelid edema, or even oozing and blistering symptoms, mostly accompanied by significant itching, it means that the allergy is more severe. Oral or topical anti-allergy medication should be administered under the guidance of a physician in the Department of Allergology. The specific recovery time is related to the treatment method, personal constitution and other factors and cannot be generalized. Patients are advised to pay attention to keeping the surface skin dry and clean, and can use honeysuckle water or furnace glycolic lotion to apply on the affected area to help relieve local allergy symptoms. At the same time, pay attention to a light diet and consume fresh fruits and vegetables as appropriate.