There is no fastest way to relieve baby skin allergy, mainly general treatment, topical medication and systemic medication. 1. General treatment: baby skin allergies may be caused by contact with allergens, such as pollen, animal dander, etc., must stay away from these allergens, and promptly wash the allergic skin. 2. Topical medication: baby skin allergies often cause itchy skin symptoms and rashes, can be applied locally glycerine lotion, generally relieve itching symptoms, if the allergy is more serious, you can also use hormone ointment, such as mometasone furoate cream, Dinhydrin cream, and so on. 3. Systemic medication: mainly for the baby to take anti-allergy drugs, such as levocetirizine and so on. If the baby’s skin is repeatedly allergic, if necessary, can go to the hospital to do allergen testing, life to avoid contact.