Everything You Need To Know About SPF

Ingalls_Refinery29_0005-7_IngallsPhotoPhotographed by Ingalls Photo.
From her laid-back, effortless style to a fresh, ahead-of-the-trend beauty aesthetic, Lauren Conrad is a girl after our own heart. So, each week, the born-and-bred California girl and editor-in-chief of LaurenConrad.com will share with us her insider secrets and personal musings. Plus, check out her visually stunning guest pinning here! Next up, Lauren gives us the lowdown on SPF.
When I walk into the sunscreen aisle, I always feel bit overwhelmed. So many numbers, so many acronyms (SPF, UVA, UVB, COTZ, WTF?!), and so not sure what to look for. I figured many of you might feel the same way so I did a little research and put together this simple, no-brainer guide about SPF.
Aside from using retinoid creams and topical antioxidants, sunscreen is the most powerful ammo we have against wrinkles and rough skin. While it’s smart to wear sunscreen when you know you’ll be outdoors (beach, shopping, brunching, what have you), it’s still important to wear it everyday, even if you’re going to be indoors — no exceptions. Rain or shine, summer or winter, SPF is a must. Okay so enough about when to wear it. Let’s talk shop about picking the right SPF and how to wear it.
Most of us would think that the higher the SPF number, the better. Right? Wrong. Without going into too much detail, the SPF number is simply a standard for how long you can tolerate the sun without burning. So, if you can stay in the sun for 10 minutes without burning, an SPF of 15 would allow you to spend 150 minutes in the sun before burning. But, the bottom line here is that anything over SPF 50 isn’t going to protect you any better. The numbers are based on time spent in the sun, which is why reapplication is essential. Also, for those of you who think that layering on SPF 15 over your SPF 10 will give the protection of SPF 25 — think again. Layering does not increase the SPF. I suppose the only benefit is that it ensures that every area is covered. Ideally, you should wear SPF 30 or greater according to the American Academy of Dermatology.
Bottom line: Wear SPF 30 with broad-spectrum UVA/UVB protection. Apply it to your face, neck and hands every single day and smother it onto your body when you are going to be outdoors in the sun. And, for more information on SPF, read here about which ingredients to look for in a good SPF.
What’s your favorite facial SPF?
XO Lauren
P.S. Fun fact: Sunscreen typically maintains its strength for about three years. After that time period, it is less effective. So if your SPF doesn’t have an expiration date, be sure to write it onto the bottle when you get it so you can keep track.

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