目前市场上化妆品种类名目繁多，令人目不暇接。不少化妆品由于质量不过关，使用后不但不能美容嫩肤，相反会给皮肤带来“灾难”，有的化妆品受细菌污染而变质，使用后也会伤害皮肤。因此，购买和使用化妆品前必须学会检验化妆品。变质化妆品的识别要点主要为以下几点：1.观察 Currently on the market a wide variety of cosmetic categories, dizzying. Due to the quality of many cosmetics, however, the use of not only can not be beauty rejuvenation, on the contrary will bring a “disaster” to the skin, and some cosmetic deterioration by bacterial contamination, will damage the skin after use. Therefore, before buying and using cosmetics must learn to test cosmetics. The main points of identification of metamorphic cosmetics are as follows: 1. Observation