What is the role of SPF in moisturizer?

The role of SPF in moisturizer is primarily to protect the skin from UV radiation. Sunscreen, or Sun Protection Factor (SPF), is crucial as it shields the skin from the harmful effects of both UVA and UVB rays. These types of ultraviolet radiation can cause various skin issues, including sunburn, premature aging, and an increased risk of skin cancer. By incorporating SPF into moisturizers, individuals can receive hydration while simultaneously safeguarding their skin from UV-induced damage, which is particularly important because many people may neglect to apply sunscreen separately.

This function of SPF is essential for a comprehensive skincare routine, as it helps maintain skin health and protects against environmental stressors. Other options do not pertain to the protective qualities that SPF offers; for instance, promoting skin elasticity, removing dead skin cells, and enhancing skin tone do not relate to UV protection and are therefore not relevant to the role of SPF in moisturizer.