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Sat Jun 05, 2010 2:30 am  |
Ah! I always thought you were supposed to apply sunscreen LAST! I was watching this video on youtube and this derm said to apply the sunscreen FIRST then your other products. So which on is it?
here are the links that stated sunscreen should be applied first then other products:
http://www.youtube.com/user/dermTVdotcom#p/u/194/vj0hEspp6io
http://thebeautybrains.com/2007/02/24/the-wrong-way-to-apply-sunscreen/
Then I read this
For physical blocking sunscreens (minerals) like Titanium Dioxide or Zinc Oxide, it doesn’t matter. They’ll work just the same whether it’s put on first or last. In this case, we recommend putting it on after your moisturizer just so the sunscreen doesn’t inhibit the penetrating ability of the moisturizer (or other treatment).
Chemical sunscreens (e.g. Oxycinnamate) are a bit different because the raw materials in the formulas can have an impact on the final SPF rating. That means if you use apply it after your moisturizer, you may reduce the SPF efficacy. So, Zinc & Titanium on last, all other sunscreens on first. Of course, you could actually solve the entire problem by using a moisturizer that contains sunscreen.
http://www.wellsphere.com/skin-beauty-article/what-8217-s-the-best-way-to-apply-sunscreen/957851 |
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