CVS Pharmacy just announced they'll no longer sell sunscreen with SPF lower than 15. This whole sun protection thing is pretty complicated, but we've got the naked truth about what to buy to save your skin and your money. From SPF 30, 50 & 100, Kristina Guerrero and Dr. Amena Deluca, M.D. are crunching the numbers with sunblock 101.
1. SPF By the Numbers
The difference between SPF 8 and 30 is significant. However, the difference between 30 and 100, you can even find 110 out there, is marginal. SPF 30 blocks 97 percent of the bad UVB rays, while 50 blocks 98 percent. You can waste your money on the higher stuff if you want to, but it's really not going to help you as much.
2. Mineral vs Chemical
There have been some theoretical concerns that chemical sunscreens can be harmful, potentially dangerous because of hormone disruptions, however there's no current data indicating that it's harmful for human use. So, currently most doctors believe they're safe. Chemical sunscreens absorb UV rays and basically kick them back out to protect you. The mineral sunscreens contain zinc oxide or titanium dioxide. These are physical barriers; they sit on your skin's surface and they block the sun's rays.
3. Proper Usage
You need one shot glass amount, or one ounce for your entire body. Another important tip is you should be re-applying your sunscreen every ninety minutes.
4. Waterproof vs Water Resistant
There's no such thing as one hundred percent water proof. You should be reapplying the 40 every forty minutes and the 80 every eighty minutes.
5. Expiration Dates
Sunscreen does have an expiration date so make sure to check the label. If it doesn’t have a label then just write it on the bottle and throw it away after three years. Really, if you're using the right amount of sunscreen it shouldn't last you three years.
What number do you prefer when it comes to sunscreen? Join the conversation on our Facebook page, @TheListShowTV.