Can sunscreen expire in heat?

Heat can cause sunscreen to deteriorate. AAD specifically warns that sunscreen exposed to high temperatures, such as inside a hot car, can spoil before its expiration date.

How can you tell if sunscreen has gone bad?

Look for changes in color, smell, texture, consistency or separation. If the product looks noticeably different from when it was new, replace it.

Can you use sunscreen after the expiration date?

It is not recommended. The FDA advises discarding sunscreen after its expiration date because it may no longer be safe and effective.

How should sunscreen be stored?

Follow the product’s storage instructions and protect sunscreen from excessive heat and direct sunlight.

Does Sunscreen Expire? How to Tell If It’s Safe

Q: Does sunscreen expire?

Yes. Sunscreen expires, and expired products should be discarded rather than relied upon for UV protection.

Q: How long does sunscreen last?

In the U.S., sunscreen without an expiration date should generally be considered expired three years after purchase. Products with an expiration date should be discarded after that date.

Q: Does unopened sunscreen expire?

Yes. Unopened sunscreen can still reach its expiration date and should not be considered usable indefinitely.

Reviewed by the HyaluFlow Health Editorial Team | Published: September 18, 2026 | Last Updated: September 18, 2026

Quick Answer: Does sunscreen expire? Yes. Sunscreen is regulated as a drug in the United States, and its expiration date indicates the period during which the product is expected to remain stable, safe and effective when stored according to its labeled conditions.

The U.S. Food and Drug Administration (FDA) says sunscreens without an expiration date should generally be considered expired three years after purchase. If a sunscreen has passed its expiration date, or you cannot determine how old it is, the FDA recommends discarding it. See the FDA's current sunscreen guidance.

Using an expired product can mean you are not getting the level of sun protection stated on the label, so replacing old sunscreen is an important part of an effective sun-protection routine.

Key Takeaways

Does sunscreen expire? Yes.
Check the expiration date printed on the container when one is provided.
Sunscreen without an expiration date should generally be discarded three years after purchase.
Changes in color, smell, texture or consistency can indicate that sunscreen has deteriorated.
Heat and direct sunlight can cause sunscreen to spoil before its expiration date.
Do not rely on expired sunscreen for protection from UV radiation.
Store sunscreen according to the manufacturer's instructions and protect it from excessive heat and direct sunlight.

How Long Does Sunscreen Last?

There is no single shelf-life period that applies to every sunscreen worldwide because labeling and regulations can differ by country and product.

For sunscreens sold in the United States, the FDA requires an expiration date unless stability testing demonstrates that the product remains stable for at least three years. For a sunscreen without an expiration date, the FDA recommends considering it expired three years after purchase. FDA explains sunscreen expiration requirements.

The American Academy of Dermatology also recommends throwing away sunscreen after its expiration date and writing the purchase date on products that do not display an expiration date. Read the American Academy of Dermatology's sunscreen FAQs.

How to Tell If Sunscreen Is Expired

The first thing to check is the expiration date. If the date has passed, the sunscreen should be discarded even if it still looks normal.

You should also pay attention to changes in the product. The American Academy of Dermatology identifies obvious changes in color or consistency as signs that sunscreen may no longer be suitable for use. Learn how dermatologists recommend checking old sunscreen.

Other warning signs can include:

A noticeable change in color
A different or unpleasant smell
Separation into different layers
A dry or flaky consistency
A texture that is clearly different from when the product was new

If you notice these changes, replace the sunscreen rather than trying to determine whether it will still provide adequate protection.

Can Sunscreen Go Bad Before the Expiration Date?

Yes. An expiration date assumes the product has been stored under appropriate conditions. Exposure to excessive heat or direct sunlight can affect sunscreen stability.

The American Academy of Dermatology notes that sunscreen can spoil before its expiration date when exposed to heat, including being left in a hot car or direct sunlight. AAD explains how heat can affect old sunscreen.

This is particularly relevant during hot weather. Keeping a sunscreen container in a hot vehicle for extended periods is not the same as storing it according to the manufacturer's instructions.

Does Unopened Sunscreen Expire?

Yes. Being unopened does not mean sunscreen remains effective indefinitely.

An unopened product can still reach its labeled expiration date. If there is no expiration date, the FDA's three-year guidance from the date of purchase applies to sunscreen products covered by its U.S. guidance.

Storage also matters. A product that has been exposed to excessive heat or direct sunlight may deteriorate even before the labeled expiration date.

What Happens If You Use Expired Sunscreen?

The main concern is that expired sunscreen may no longer provide the level of protection stated on its label. The FDA recommends discarding expired sunscreen because it may no longer be safe and effective. See FDA guidance on expired sunscreen.

That matters because sunscreen is intended to help protect skin from ultraviolet radiation. When you use an ineffective product, you may mistakenly believe your skin is adequately protected when it is not.

The American Academy of Dermatology also advises throwing away expired sunscreen and replacing products whose appearance or consistency has changed.

How Should You Store Sunscreen?

Follow the storage instructions on the product label and avoid excessive heat and direct sunlight. FDA sunscreen labeling includes instructions to protect sunscreen from excessive heat and direct sun. Review FDA sunscreen labeling guidance.

Avoid leaving sunscreen in a hot car or another location where temperatures can become extreme. Keeping the container in a cooler, shaded location can help maintain the product under more appropriate storage conditions.

When Should You Replace Your Sunscreen?

Replace sunscreen when its expiration date has passed. You should also replace it if you do not know how old it is, particularly when there is no expiration date.

Replace it sooner if you notice a major change in color, odor, texture or consistency, or if the product has been exposed to significant heat or direct sunlight.

When buying a replacement, the American Academy of Dermatology recommends looking for sunscreen that offers SPF 30 or higher, broad-spectrum protection and water resistance. See AAD's sunscreen selection guidance.

The Bottom Line

Does sunscreen expire? Yes. Sunscreen does not remain effective forever, and expired sunscreen should not be relied upon for sun protection.

Check the expiration date, replace products that are more than three years old when no expiration date is available, and discard sunscreen that has changed noticeably or has been exposed to excessive heat or direct sunlight.

Using fresh sunscreen correctly, along with shade and sun-protective clothing, can help provide more reliable protection from UV exposure and its effects on skin.