What is the primary function of sunscreen?

The primary function of sunscreen is to protect the skin from UVA and UVB rays. This is essential because UV radiation from the sun can lead to various skin issues, including sunburn, premature aging, and an increased risk of skin cancer. Broad-spectrum sunscreens are formulated to screen out these harmful rays, thereby acting as a barrier that helps prevent damage to the skin's DNA and overall health.

While other options refer to important aspects of skincare, they do not represent the primary purpose of sunscreen. Hydration, improving texture and tone, and serving as a makeup base are all valuable functions in a skincare routine, but they do not address the critical need for protection against sun exposure, which is the foremost role of sunscreen. Understanding the importance of protecting the skin from UV rays is crucial for maintaining skin health and preventing long-term damage.