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The Ultimate Sunscreen Quiz
by Staff
Most people know by now that you should always wear sunscreen. But do you use it correctly? Do you know what ingredients to look out for? Take our quiz and find out.

Is an SPF 30 sunscreen twice as strong as one with an SPF of 15?

  • yes
  • no
  • It depends.

What's the minimum SPF you should use?

  • 15
  • 30
  • 50

How long before you go out in the sun should you apply sunscreen?

  • 15 to 30 minutes
  • 30 minutes to an hour
  • at least an hour

If you usually burn after 10 minutes of being out in the sun, how many minutes do you have using a 30 SPF?

  • 1,000
  • 300
  • 30

There's a product that can add sunscreen to clothes in the washer. What is it called?

  • Sunguard
  • Sunblocker
  • Sunstop

What are the two sunscreen ingredients that are safest for babies?

  • titanium dioxide and octinoxate
  • zinc oxide and octinoxate
  • zinc oxide and titanium dioxide

Why are zinc oxide and titanium dioxide such good ingredients?

  • They're chemical blockers -- they keep the sun's rays from penetrating the skin.
  • They're physical blockers -- they physically deflect the sun's rays from the skin.
  • They penetrate the skin more deeply than other ingredients do.

What are some other ingredients you can keep an eye out for?

  • avobenzone and Mexoryl SX
  • oxybenzone and octisalate
  • oxycontin and avobenzone

You have a face powder with an SPF of 15. How much powder do you have to apply to get the advertised SPF?

  • your normal amount
  • 7 times as much
  • 14 times as much

The Environmental Working Group studied 1,000 sunscreens in 2008. What percentage earned a passing grade?

  • 15 percent
  • 50 percent
  • 75 percent