January 21, 2018

What you need to know about your SPF

19 May 2017, 09:20 | Winifred Adams

What you need to know about your SPF

What you need to know about your SPF

Consumer Reports says using the best sunscreen won't protect your skin if you're not using it properly.

What Are SPF, UVA, And UVB?

Experts recommend broad-spectrum products with an SPF of 30 or higher if you will be outdoors for awhile, although an SPF over 50 offers no additional benefit. But, both UVA and UVB rays can cause skin damage and cancer.

Dr Polcari also said that everybody should apply sunscreen every time they go outside as even on cloudy days up to 80 per cent of the sun's harmful UV rays can reach skin. SPF (sun protection factor) test, with the consumer group branding it a "Don't buy".

While the FDA requires sunscreen makers to have their products tested to evaluate the SPF, the agency does not test routinely test products. However, the government agency rarely demands the test results from the company, which may be the reason why the labels on some sunscreen lotions are misleading and incorrect. Amazon will feature Foundation articles on everything from seasonal sun protection to the importance of early detection on its Professional Skin Care Section.

How Was The Test Conducted?

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Each test involved applying a small amount of sunscreen to the backs of 10 volunteers. Next, the scientists applied artificially-created UVB rays on the exact spot where the sunscreen lotion was applied.

This sunscreen recieved a flawless score of 100 for the third year in a row from Consumer Reports.

But just how accurate is the SPF number on your sunscreen bottle? The mass retailer is getting rid of all sun care products under SPF 15. Finally, Consumer Report's third choice is the Equate Sport Lotion SPF 50, which retails for $5. "Other best buys include Trader Joe's Spray SPF 50+, which got a flawless score in our ratings, and Pure Sun Defense Lotion SPF 50", Calvo said. It retails for $6.

Which? also repeated a warning to consumers to avoid once-a-day products after tests on four past year found the average drop in SPF after six to eight hours was 74% - meaning a hypothetical SPF30 product would drop to SPF8.

Consumer Reports says if you can't find one of their recommended products, choose a sunscreen with at least 40 SPF that contains chemical active ingredients such as avobenzone rather than one with mineral active ingredients like zinc oxide.

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