I have been shopping online for a year. At first, I bought on eBay, but they were all fake. Later, I chose Taobao. There is a software called Wangwang, which is similar to QQ. You can talk to the seller directly and bargain. There are several ways to distinguish whether the cosmetics are genuine: 1> Ask directly. Generally, if you ask the shopkeeper, they will tell you directly. Note that if it is a Hong Kong version or a Taiwan version, it is fake. 2> You can also look at the credit rating of the seller. If there is a review saying it is fake, don't buy it from this store. 3> If it is a famous European and American brand cosmetics or skin care products, and the price is very cheap and there are many specifications, it is basically fake or a protective product. 4> If you receive skin care products sent to you, don't try to use them first, but do a sensitivity test. 5> When asking the seller questions, don't forget to ask about the production date of cosmetics and skin care products. You can also buy things that are about to expire online, and the price is super cheap! 6> I haven't thought about it yet, I'll write it when I think about it!