Master the skill of using makeup brush

　　Master the use skills of makeup brush: 　　 1. To prevent allergic reactions 　　Before using a new product, you must first do a skin test, and then use it when there is no reaction such as redness and itching. Once the cosmetics are found to have adverse effects on the white skin, they should be stopped immediately. 　　 2. Different types of cosmetics should be used according to the climate 　　Cold and dry winter should be used with oily cosmetics, spring, summer and autumn should be used with high moisture cosmetics. 　　 3. Do not use spoiled cosmetics 　　 Cosmetics contain substances such as fat and protein, which are prone to spoilage or infection by bacteria after a long time. The cosmetics should be fresh, generally used within 3 to 6 months, and stored in a cool and dry place. 　　 4. Do not use inferior cosmetics 　　 In order to prevent the harm of toxic substances such as mercury and carcinogens in cosmetics, high-quality products approved by the Ministry of Health should be used.