What does sunblock have in it?

Sunblock typically contains active ingredients that provide protection against harmful ultraviolet (UV) radiation. These ingredients can be physical blockers like zinc oxide or titanium dioxide, which sit on the skin's surface and reflect UV rays, or chemical absorbers like avobenzone or octisalate, which absorb UV radiation. Additionally, sunblocks often include moisturizing agents, antioxidants, and preservatives to enhance skin health and product stability. Always check the specific formulation for the exact ingredients used.