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sun screen question 4 chemistry/product/sunscreen gurus

 
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marsto911



Joined: 14 Apr 2005
Posts: 122

PostPosted: Tue May 23, 2006 4:10 am    Post subject: sun screen question 4 chemistry/product/sunscreen gurus Reply with quote

Hi,

My question is, when sunscreen is applied to the skin, what causes the breakdown of the photo unstable items? Oxygen? Sunlight? Skin?

Thanks for your help.

Marsto
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drtodorov
Site Admin


Joined: 10 Dec 2004
Posts: 3177

PostPosted: Tue May 23, 2006 3:42 pm    Post subject: Reply with quote

Usually either sunlight or oxygen or a combo of both.
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