I bought cosmetics at Sanya Duty Free Shop. Can I mail them myself?

You can't. Because Sanya Duty Free Shop only provides pick-up service at the airport, it does not provide mail service, and there are some restrictions on international express delivery of cosmetics. Most cosmetics contain chemical components, and some cosmetics also contain flammable components such as alcohol and volatile aromatic hydrocarbons. The temperature of the warehouse at the bottom of the plane is relatively high, which is prone to chemical reactions and causes safety accidents. Therefore, only a few international express agents have specific logistics channels and safe transportation qualifications. You can safely send most cosmetics and skin care products abroad. In addition, cosmetics and skin care products of well-known foreign brands should not be mailed, because there is a certain risk of customs clearance, and the customs will detain the goods because they cannot judge the authenticity and quality of the goods.