Once-a-day sunscreens fail to live up to claims, says Which?

Tests on four major brands found they became less effective after six to eight hours

Using sunscreen which claims it needs to be applied only once a day will not fully protect against the sun, a watchdog has warned.

Tests of four major brands of sunscreen found that, after six to eight hours, the effectiveness of SPF 30 lotions reduced by 74%, leaving the skin vulnerable to harmful ultraviolet rays.

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from Health & wellbeing | The Guardian http://ift.tt/1X13VMy
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