Part 2 of 4: What Does SPF Mean?

Part 2 of a 4 part series on sunscreen SPF stands for sun protective factor and it represents a relative value of how much a sunscreen can increase the time...
Part 2 of a 4 part series on sunscreen SPF stands for sun protective factor and it represents a relative value of how much a sunscreen can increase the time...
This is the first of a 4 part series on sunscreen. Part 1: How does sunscreen work? Part 2: What does SPF mean? Part 3: What does “broad spectrum” mean?...