SPF: Spf 15 product blocks about 94% of uvb rays; an spf 30 product blocks 97% of uvb rays; and an spf 45 product blocks about 98% of rays. None block 100%. Even with sunscreen you will get some color if you are out in the sun a long time.
Answered 10/6/2013
5k views
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
5 doctors weighed in across 3 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question