Cosmetic allergy need to immediately stop using the product, and under the guidance of clinicians for standardized anti-allergy treatment. 1. Cosmetic allergy patients first need to stop using allergic products, away from the allergen, if the allergic reaction gradually reduce may not do special treatment. 2. If the allergic reaction is more serious or not relieved after stopping the use of cosmetics, it is necessary to apply drugs under the guidance of a doctor, usually divided into external and oral medication. (1) Topical medications such as dexamethasone cream and mometasone furoate cream are commonly used to alleviate the redness and itching of the skin caused by allergic reactions. (2) Oral medications commonly used antihistamines, such as loratadine, chlorpheniramine maleate, etc.. It should be noted that the choice of cosmetics should choose products produced by regular manufacturers, do not use three products. In addition, allergy sufferers need to actively seek medical treatment, under the guidance of the doctor scientific treatment.