ANO 0.00% 72.0¢ advance zinctek limited

Good item from *, page-6

  1. rab
    4,574 Posts.
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    It may be a myth but as far as i know there is a time factor involved as well. 15 gave a re-apply time of 150min, 30 300mins and 50 500mins. Of course the 8 hour coverage is the ultimate.

    SPF 15 allows 3 x the amount of damaging UV rays compared to SPF 50

    I don't think this formula holds true without the time included.

    Anyway, i need to try the SPF 50 and see how comfortable it is to wear.
    Most 50s are gluggy and hot which is not a problem in the surf.
 
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