Chemical sunscreens work by absorbing into the skin. They contain organic compounds such as Oxybenzone and Avobenzone which create a chemical reaction and work by changing UV rays into heat and then releasing the heat from the skin.
Chemical sunscreens tend to be thinner and spread more easily on the skin and is more suitable for daily use.
With Chemical sunscreen, you need to wait about 20 minutes before being exposed to the sun, which gives the sunscreen time to absorb into the skin. These types of sunscreen can cause skin irritation more easily, so they're not ideal for sensitive skins.