SPF: What Do Those Numbers Really Mean?

SPF: What Do Those Numbers Really Mean?

I've been getting a lot of questions about sunscreen since my last post. So here is a follow up #detoxmetuesday about SPF. 

Who remembers rubbing 70+ SPF all over themselves thinking that you are getting more protection from the sun? Here are the real numbers and why higher SPF may not be better. 
*SPF 15 blocks 94% of UVB rays
*SPF 30 blocks 97% of UVB rays
*SPF 45 can block up to 98% of UVB rays. 
*Anything higher isn't helping. 
This is an awesome article that explains more.

The Gist: 

  • The SPF number does not directly correlate to the amount protection you are getting
  • The most important thing you can do is get a physical sunscreen (see previous post) and reapply every 2 hours.
  • In honor of earth week I also want to highlight that oxybenzone, the ingredient in most chemical sunscreens, is seriously harming our coral reefs. Read more here. Note 5/22/18: Hawaii has officially banned sunscreens with this ingredient. Read more HERE.
  • Be nicer to your skin and our environment by switching to a physical sunscreen like this one. 
  • Shop my favorite safer sunscreen by Beautycounter HERE. (Note 5/22/18: The links have been updated to shop the new Countersun line that protects against UVA, UVB and Blue Light. Read more HERE> 
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