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Does sunscreen expire? When to replace your sunscreen

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Expired SPF may not work as well. Replacing it on time can save you a sunburn and prevent skin damage.

Sunscreen is summer’s best friend. 

It’s hot, it’s sunny and you want to hit the beach (or lay out on your front lawn because #socialdistancing). Don’t forget to slather on the SPF — but not with that crusty bottle of sunscreen you found in the depths of last year’s beach bag. Before heading to the shore this summer, make sure you’re not using expired sunscreen, because, yes, sunscreen can expire and when it does, it’s not as protective. 

Read more: Should you use chemical or mineral sunscreen?

Sunscreen is required to maintain its original effectiveness for several years.

The Food and Drug Administration mandates that all sunscreens maintain their full strength for three years — so, if you have leftover sunscreen at the end of the summer, you should be able to safely use it for two more summers. 

Some sunscreen manufacturers print the expiration date on the bottle or label, but not all do. When you buy a bottle of sunscreen, check for an expiration date. If it doesn’t have one, write the date of purchase in permanent marker. 

Theoretically, if you’re using sunscreen in the recommended way — putting it on any bare skin when you go into direct sunlight for any length of time — you shouldn’t have much leftover year to year.

If you have a bottle of sunscreen that you’re not sure about, use your best judgement: When’s the last time you remember using that sunscreen? Does the bottle itself seem old? If you think it’s over three years old, it probably is. 

Other hints that your SPF might be ineffective include: 

Expired sunscreen won’t harm your skin, but it will allow the sun to harm your skin.

Using expired sunscreen won’t hurt you directly — as in, it won’t do anything to your skin — but it could set you up for a gnarly sunburn. And, as you already know, sunburns indicate unprotected sun exposure, which is directly related to your risk of developing skin cancer and premature aging. 

The expiration date is there for a reason: to let you know if that sunscreen is still effective. It’s always a good idea to buy a new bottle of sunscreen if yours is expired. For ultimate skin protection (or if you’re just not about tanning under the actual sun) try a sunless self-tanner instead.

Read more: What is reef-safe sunscreen?

The information contained in this article is for educational and informational purposes only and is not intended as health or medical advice. Always consult a physician or other qualified health provider regarding any questions you may have about a medical condition or health objectives.

Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you to read. Discussion threads can be closed at any time at our discretion.

This Article was first published on cnet.com

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