Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
SPF stands for Sun Protection Factor. If you have an SPF of 15 that would mean that you could stay out in the Sun 15 times longer than you normally could not wearing sunscreen. Although it is not necessary to use an SPF for indoor tanning, we always recommend the use of one of our Hempz SPF formulas outdoors to prevent over exposure.
