As temperatures rise and outdoor plans fill up your calendar, chances are you’re reaching for last year’s sunscreen. But before you slather it on, there’s one important question to ask: is it still good?

Expired sunscreen is one of the most overlooked skin care mistakes — and it could be putting your skin at serious risk.

Does Sunscreen Actually Expire?

Yes, it absolutely does. The FDA requires all sunscreens to remain stable and effective for at least three years, which is why most bottles are stamped with an expiration date. Once that date passes, the active UV-filtering ingredients begin to break down — meaning you’re getting far less protection than the SPF number on the label promises.

How to Tell If Your Sunscreen Has Gone Bad

Even before the expiration date, sunscreen can degrade if stored improperly. Watch out for these warning signs:

  • The texture has separated, become watery, or looks chunky
  • The color has changed (yellowing is a red flag)
  • It smells off or noticeably different from when you first opened it
  • You can’t find an expiration date — when in doubt, throw it out

Where You Store It Matters More Than You Think

Heat, humidity, and direct sunlight can all accelerate breakdown of the active ingredients in sunscreen. Leaving it in a hot car, on a poolside ledge, or in a steamy bathroom cabinet can shorten its effective life considerably — even if the product hasn’t technically “expired” yet.

Store sunscreen in a cool, dry place and keep it out of direct sunlight whenever possible.

What SPF Should You Be Using?

For daily use, Dr. Monique S. Cohn, DO FAOCD recommends a broad-spectrum SPF 30 at minimum, and SPF 50 or higher for extended time outdoors. According to the American Academy of Dermatology, “broad spectrum” means the formula protects against both UVA rays (which cause aging and skin damage) and UVB rays (which cause sunburn).

Reapplication every two hours — and immediately after swimming or sweating — is just as important as the SPF number on the label.

Don’t Let Old Sunscreen Sabotage Your Summer

Starting the summer with fresh, properly stored sunscreen is a simple step that makes a real difference in protecting your skin from premature aging, sunburn, and long-term UV damage. When in doubt, replace it — your skin is worth it.

Not sure what sunscreen is right for your skin type?

Our team can help you build a personalized skincare routine backed by clinical expertise. Dr. Monique S. Cohn, DO FAOCD and our staff are here to help. Book a consultation today to get recommendations tailored to your skin.