How can I avoid skin tanning while swimming?
Q: I am a professional swimmer. I go for swimming daily for at least three hours and I would like to know how to remove my tan caused by swimming. I have used many SPF sunscreens but it does not help. What should I apply before and after swimming?
A:You should first know what exactly is an SPF and then which sort of sunscreen to use. SPF refers to the products ability to screen or block out the suns harmful rays. For example, if you use a sunscreen with an SPF 15, you can be in the sun 15 times longer that you can without sunscreen before burning. Consumers need to be aware that SPF protection does not increase proportionally with an increased SPF number. While an SPF of 2 will absorb 50% of ultraviolet radiation, an SPF of 15 absorbs 93% and an SPF of 34 absorbs 97%. So very high SPF is not really required for Indian skin. The Food and Drug Administration considers a sunscreen water-resistant if it maintains its SPF level after 40 minutes of water exposure. A product is considered waterproof if it maintains its SPF level following 80 minutes of exposure to water. If you participate in outdoor recreational activities including swimming, you may want to choose a waterproof sunscreen.