Sunscreens are special lotions or sprays that protect your skin from the harmful effects of the sun's rays. They work by absorbing or reflecting the sun's ultraviolet (UV) radiation, which can cause sunburn and increase the risk of skin cancer. Using sunscreen is important, especially during sunny days or when spending time outdoors, to keep your skin healthy and safe. There are two main types of sunscreens: chemical and physical. Chemical sunscreens absorb UV rays, while physical sunscreens contain minerals like zinc oxide or titanium dioxide that sit on the skin's surface and block the rays. It's essential to choose a sunscreen with a high SPF rating and to reapply it regularly for the best protection.