How to know when it’s time to reapply sunscreen

Using sunscreen is a seemingly simple idea. 

The UVSunSense Wristband

You slather it on before heading out and then reapply when needed.  But what if it’s hot and you’re sweating.  How soon do you need to reapply?  Are you safe after spending some time in the water if you’re wearing waterproof sunscreen?  What about if it’s a cloudy day…does your sunscreen last longer since you aren’t being exposed to as many direct rays?  Not so simple anymore, is it?

Enter the sunscreen wristband.

Created by a nuclear physicist, the UVSunSense wristband claims to detect and measure the strength of dangerous UV rays and changes color to let you know when it’s time to reapply suntan lotion.

Here’s how it works.  You apply sunscreen to yourself and the bracelet (SPF 15 or higher).  It’ll turn bright purple as soon as you expose it to sunlight.  Wear it while you’re out in the sun and when it turns light pink, it means it’s time for another round of sunscreen. 

But beware if the bracelet turns a pale yellow.  That color is an indicator that you’ve reached your maximum daily limit of UV radiation and should spend the rest of the day in the shade.

You can purchase the bracelets at as well as Kmart, Costco and Walgreens.

If it does work the way it says it does, I think the funky bracelet tan line is a decent tradeoff for preventing skin cancer.


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One Response to “How to know when it’s time to reapply sunscreen”

  1. Tips for staying safe this holiday weekend « Buff Broad Says:

    […] 1 – Wear Sunscreen!  At least an SPF 30 if it’s your first time out in the sun.  A lower SPF means you’ll burn quicker, not tan faster.  And don’t forget to reapply, especially after swimming or excessive sweating.  If you’re not sure when it’s time to lather up again, invest in some UVSunSense bracelets. […]

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