What is the primary function of a sunscreen?

The primary function of a sunscreen is to provide a barrier against UV rays. Sunscreen contains active ingredients that are designed to absorb, reflect, or scatter the sun's harmful ultraviolet radiation, which can lead to skin damage, sunburn, and increased risk of skin cancer. By creating this protective layer, sunscreen helps to prevent the skin from suffering the adverse effects of sun exposure, making it an essential part of a skincare routine, especially for those who spend extended periods outdoors.

While hydration is important for the skin, that is not the role of sunscreen; instead, moisturizers are specifically formulated for that purpose. Enhancing facial features typically relates to cosmetics like foundation or highlighter, which are different from sunscreen's protective function. Exfoliation is achieved through other skincare products designed to remove dead skin cells, again, not the function of sunscreen. Thus, the role of a sunscreen is uniquely focused on UV protection, which is paramount for maintaining skin health.