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sunblock

   Also found in: Dictionary/thesaurus, Wikipedia 0.02 sec.
sunblock
Public health An opaque substance, usually formulated from zinc or titanium oxides, designed to completely prevent solar radiation from reaching the skin. See SPF rating. Cf Sunscreen.
Patient discussion about sunblock.

Q. what does a sun block cream do? and what are a UV rays?

A. It blocks out harmful Ultra violet rays from the skin as the previous entries have related; however it can also block your ability to produce vitamin D. If you live in a northerly area or one that receives limited sunlight, its recommended to get at least 15 minutes of sun a day (this is probably best done with minimal sunblock) and according to personnal sun sensitivity. Another thing to keep in mind is that sunblock works best if applied 20 minutes before sun exposure.

Read more or ask a question about sunblock
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While we cannot completely remove ourselves from exposure to this particular source of damage, it is a simple matter to utilize a sunblock on a regular basis.
How Serious Is It to Protect the Skin from Harmful UV Rays by Amy E Nutt / Food/cooking/nutrition community
Malignant melanoma is a threat we can beat by not overdoing it, slapping on the sunblock and spending time in the shade.
Rays a cheer by The Mirror (London, England)
In an effort to meet the demands of high altitude activities and exposure, Sierra Summits Skin Products introduces its specifically formulated High Altitude Adventure Sunblock (SPF 40).
Advanced sun protection by Mendelson, Seth / Grocery Headquarters
 
 
 
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