Sun protection refers to the use of methods to block or absorb ultraviolet rays in order to prevent the skin from being tanned or sunburned.

General sun protection methods: apply sunscreen products, use sunscreen clothing and other items, eat sunscreen food, etc. Sunscreen products are divided into physical sunscreen, chemical sunscreen, and biological sunscreen; among them, the level of the sun protection index can reflect the UV protection ability of sunscreen products.