Sunscreen Expiration Date: How to Check the Label and Know When to Replace It

Information checked: 2026-09-09 · Maintenance label: Evergreen check

The bottle in the bathroom cabinet from two summers ago has no date printed on it. That is not an oversight, and it does not mean the product lasts forever.

In the United States sunscreen is regulated as a drug, not a cosmetic. That is what determines the labelling rules, and it is why the absence of an expiration date carries a specific meaning rather than none.

This guide covers what the date means, what to do when there is not one, and the two label terms most people misread.

Key takeaway

FDA requires nonprescription drugs to carry an expiration date unless the manufacturer's stability testing shows the product remains stable for at least three years. So a sunscreen with no date should be considered expired three years after you bought it. Heat and sun exposure degrade it, and no sunscreen may be called waterproof.

Table of contents

• What the missing date means
• Storage matters as much as the date
• Two label terms people misread
• A two-minute check
• Sunscreen bought abroad
• Frequently asked questions
• Summary

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What the missing date means

FDA regulations require all nonprescription drugs to have an expiration date unless the manufacturer's stability testing has shown that the product will remain stable for at least three years.

So the absence of a date is a claim in itself: the manufacturer has tested for three-year stability. The practical rule follows directly — a sunscreen without a printed expiration date should be considered expired three years after purchase.

Write the purchase date on the bottle in marker when you buy it. That one habit removes the guesswork entirely, because a receipt from two summers ago is not something anyone still has.

Read the label the way FDA doesFDA sunscreen guidance ›What broad spectrum and water resistant actually mean, and why no sunscreen may be called waterproof.

Storage matters as much as the date

FDA advises that sunscreen containers should not be exposed to direct sun, and recommends wrapping containers in a towel or keeping them in the shade during extended outdoor use.

Consider where your sunscreen actually lives:

• A car glovebox through summer — repeated heat cycling
• A beach bag left open on sand in full sun
• A poolside table rather than under a chair

A bottle stored that way may not perform as labelled even inside its date. Visible separation, a change in colour or texture, or a watery consistency are reasons to replace it regardless of what the date says.

Two label terms people misread

Term	What it actually means
Broad spectrum	Helps protect against both UVA and UVB radiation. A product without this designation must carry a warning that it only prevents sunburn, not skin cancer or early skin ageing.
Water resistant	Protection lasts either 40 or 80 minutes while swimming or sweating — the label must say which. Reapplication is required afterwards.

On the second: no sunscreen is waterproof, and FDA does not permit the claim. A product labelled water resistant is telling you how long it lasts in water, not that water does not affect it.

A product without the broad spectrum designation is not protecting you from the things most people buy sunscreen to prevent. That is worth checking on a bottle you already own.

A two-minute check

1. Find the expiration date. If there is one and it has passed, replace the product.
2. If there is no date, work from when you bought it. Older than three years, replace it.
3. Check for broad spectrum on the label.
4. Check whether it says water resistant, and whether that is 40 or 80 minutes.
5. Look at the contents: separation, discolouration or an unusual texture means replace it.
6. Write the purchase date on the new bottle.

One more practical point: a bottle that lasts three years in a household that uses sunscreen properly is a sign of under-use rather than good value. Running out is the expected outcome.

Sunscreen bought abroad

Sunscreens sold in other countries may be regulated differently in their home markets. Products regulated as cosmetics elsewhere are not held to the same nonprescription drug standards that apply in the United States, and their labelling conventions differ.

That does not make them unsafe, but it does mean the label terms and dating rules described here may not apply to a bottle bought overseas.

Frequently asked questions

My sunscreen has no expiration date. Is it still good?

FDA requires a date unless stability testing shows three-year stability, so treat an undated product as expired three years after purchase.

Does heat ruin sunscreen?

FDA advises keeping containers out of direct sun and wrapping them in a towel or keeping them shaded outdoors. A bottle stored in a hot car may not perform as labelled.

What does broad spectrum mean?

It helps protect against both UVA and UVB. Without that designation, the label must warn that it only prevents sunburn, not skin cancer or early skin ageing.

Is any sunscreen waterproof?

No. FDA does not permit the claim. Water resistant products must state whether protection lasts 40 or 80 minutes.

Is sunscreen a cosmetic?

In the United States it is regulated as a drug, which is why the expiration dating and labelling rules apply.

Summary

No date means three years from purchase. Write the purchase date on the bottle and the question never comes up again.

Check for broad spectrum, note whether water resistance is 40 or 80 minutes, and replace anything that has separated or has spent a summer in a hot car.