In skincare, what is the purpose of using SPFs?

Using SPFs, or Sun Protection Factors, serves the critical purpose of protecting the skin from UV radiation damage, which can lead to a range of skin issues, including sunburn, premature aging, and an increased risk of skin cancer. Broad-spectrum SPFs are designed to shield the skin from both UVA and UVB rays. UVA rays penetrate the skin deeply and are primarily associated with skin aging and photoaging, while UVB rays are responsible for causing sunburn and can directly damage the DNA in skin cells.

The application of SPFs helps maintain skin health and is especially important during outdoor activities or exposure to sunlight. Establishing a daily habit of using SPF can significantly reduce the harmful effects of sun exposure and is a key component of any effective skincare routine aimed at prevention.

The other options do not align with the fundamental purpose of SPF. Tanning or darkening the skin tone or enhancing tanning results is not the intent of SPF products; rather, these may lead to increased damage from UV exposure. Additionally, while some skincare products may indeed increase moisture levels in the skin, this is not a role played by SPFs, which are specifically formulated to provide protection against UV radiation rather than to serve as moisturizers.