What does SPF stand for?

SPF stands for Sun Protection Factor, which is a term used to indicate the level of protection sunscreen provides against UVB rays, the type of radiation that causes sunburn and contributes to skin cancer. The number associated with SPF indicates how much longer a person can be exposed to the sun without getting sunburned compared to if they were not wearing sunscreen. For example, an SPF of 30 theoretically allows a person to stay in the sun 30 times longer than without protection. Understanding SPF is crucial for effective sun safety practices, allowing individuals to choose the appropriate level of protection based on their skin type and sun exposure conditions.