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Thu Oct 09, 2008 9:12 pm  |
Hi Fairene,
Unfortunately, SPF factors do not stack up. (So, an SPF 15 + SPF 15 does not equal SPF 30) So, even if you apply two layers of SPF 15 sunscreen, you still only have an SPF of 15.
That said, there are benefits to using an SPF moisturizer plus sunscreen. Most people do not apply enough sunscreen product - which means that they're not getting the full benefit of the SPF factor. Two layers of SPF give you a higher chance of actually getting the full amount of SPF.
Also, in cases where one item is not broad spectrum - it could be beneficial to have an additional layer of protection. (Many items only have UVB - so it would be helpful to add an item that has both UVA and UVB protection.)
Hope this helps! |
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Fri Oct 10, 2008 6:23 am |
| Fairrene wrote: |
have to find out more abt mixing chemical and Physical suncreen ... anyone knows any source on this?
Cause sometimes u use chemical sunscreen but foundation has SPF and is usually Mineral which means it is physical.
... and sometimes SPF has both chemical and physical too so ??? |
Top dermatologist Dr Leslie Baumann recommends a double layer of sunscreen, first a chemical sunscreen, and then a physical sunscreen on top, when spending many hours outdoors.
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4. If I am going to spend any significant time in the sun, though, a moisturizer with SPF is not enough. I add a chemical sunscreen like La Roche-Posay Anthelios SPF15 (if I'm lucky, I might even have some of the SPF50+ version that's only available abroad), followed by Blue Lizard Australian Suncream for sensitive skin. (The Blue Lizard is a physical sunscreen - that is, it contains zinc oxide and titanium oxide to reflect light - and may appear white for the first few minutes after it's applied). Using both a chemical and a physical sunscreen might seem like overkill, but it's absolutely the best way to protect skin in sunny environments.
http://health.yahoo.com/experts/skintype/11397/a-daily-skin-care-routine/
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Female, 40, Norway. Normal/dry skin, starting to see signs of aging. Staples: Glycolic acid cleanser, SkinCeuticals Phloretin CF, Revaleskin, NIA24. |
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