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how long does sunscreen last?

 
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ChoYongGi




Joined: 20 Sep 2007
Posts: 48
PostPosted: Wed Sep 17, 2008 2:29 am    Post subject: how long does sunscreen last? Reply with quote
i have high school which starts from 9:13-4. i put sunscreen on everyday SPF 50 and i was wondering how long it would last. 2 3 4 hours? and i was wondering if there was a sunscreen that stays on for 24 horus or something like that
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Boss Man




Joined: 25 Nov 2006
Posts: 3558
Location: My site, (Steelmuscle), and anywhere else I feel like
PostPosted: Wed Sep 17, 2008 1:07 pm    Post subject: Reply with quote
I don't think there is one that lasts for 24 hours, but the fact is some sunscreens last for a short space of time, so the Sun Protection Factor is good but limited in duration, and you may need to apply it 2-3 times a day.

There might be some kind of consumer organisation or website, that does indpendant testing, that might be able to give you specific statistics for many well known brands, but I don't really know what else to say.
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ChoYongGi




Joined: 20 Sep 2007
Posts: 48
PostPosted: Wed Sep 17, 2008 8:29 pm    Post subject: Reply with quote
oh i see okay thx for the info boss man
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