What is the difference between SPF 30 and 50? Sun protection factor (SPF) directly measures protection against sunburn caused by UV B rays. A SPF 20 sunscreen means that it absorbs 95% of UVB rays, while an SPF 50…
Tag: Self-tan
What is the difference between SPF 30 and 50? Sun protection factor (SPF) directly measures protection against sunburn caused by UV B rays. A SPF 20 sunscreen means that it absorbs 95% of UVB rays, while an SPF 50…