What is the primary function of sunscreen?

The primary function of sunscreen is to protect against UV radiation. Sunscreen is specifically formulated to absorb, reflect, or scatter the sun's harmful ultraviolet rays, which can lead to skin damage, premature aging, and an increased risk of skin cancer. By applying sunscreen, individuals can significantly reduce the harmful effects of sun exposure.

While sunscreen can sometimes have additional benefits, such as containing moisturizing agents, it is not primarily intended to promote hydration or enhance skin texture. Similarly, it is not designed for the purpose of removing impurities, which is a function more associated with cleansers or exfoliants. The main goal of sunscreen is to establish a barrier that shields the skin from UV damage, making it essential for maintaining skin health when exposed to sunlight.