What is the main function of SPF in skincare products?

The main function of SPF, or Sun Protection Factor, in skincare products is to protect against UV radiation. SPF is specifically designed to measure the level of protection a product offers against the sun's harmful ultraviolet rays, particularly UVB rays, which are known to cause sunburn and contribute to skin cancer.

When a product contains SPF, it acts as a barrier that helps minimize the amount of UV radiation that penetrates the skin. By using sunscreen with appropriate SPF levels, individuals can significantly reduce their risk of skin damage, premature aging, and various skin cancers that are caused or exacerbated by sun exposure. This is why incorporating SPF into a daily skincare routine is crucial for maintaining skin health, especially for those who spend time outdoors or are in sunny environments.

The other options relate to different skincare functions but do not pertain to the specific role of SPF. Moisturizers hydrate the skin by attracting and retaining moisture, exfoliants remove dead skin cells to promote cell turnover, and products that enhance collagen production focus on supporting skin elasticity and firmness. Each of these functions is important for overall skin health but does not address the protective qualities of SPF against UV radiation.