Q. Does a higher-SPF (sun protection factor) sunscreen always protect your skin better than a lower-SPF sunscreen? How high should I go? A. read more
SPF 15 or higher for UVB protection. The SPF factor rates how effective the sunscreen is in preventing sunburn caused by UVB rays. If you'd normally burn in 10 minutes, SPF 15 multiplies that by a factor of 15, meaning you could go 150 minutes before burning. read more
Sun protection factor (SPF) is a number, for example, SPF15. It indicates how much protection a product offers against UVB light. A product with a higher SPF number will offer greater protection. read more
SPF, which stands for sun protection factor, is a measure of how well a sunscreen guards against ultraviolet B (UVB) rays, the chief cause of sunburn and a contributor to skin cancer. Assuming you use it correctly, if you’d burn after 10 minutes in the sun, an SPF 30 protects for about 5 hours. read more