Label literacy

Does sunscreen expire? FDA's 3-year rule, storage, and when to toss it

Yes, sunscreen expires. Learn the FDA's 3-year rule, what to do if there's no date, how heat ruins sunscreen, and the signs it's time to throw a bottle out.

2026-11-02 storage FDA label

The short answer

Yes. Sunscreen is an over-the-counter drug in the US, so it must carry an expiration date unless testing shows it stays stable for at least three years ^[1]^[3]. If your bottle has no date, the FDA says to treat it as expired three years after you bought it ^[1]. Toss any sunscreen that is past its date, that you can't date, or that has changed color, smell, or texture ^[1]^[2].

Why does sunscreen have an expiration date?

Sunscreen is regulated as a drug, not just a cosmetic. The FDA says sunscreen products are drugs under the law, and makeup or moisturizer with SPF on the label is regulated as both a cosmetic and a drug ^[4]. Drugs must be tested for stability and must show an expiration date on the label ^[4].

The reason is simple: the active ingredients that block UV rays break down over time. The AAD quotes a board-certified dermatologist who says to toss sunscreen when it expires "because the active ingredients that protect your skin break down and no longer protect you" ^[2].

What is the FDA's 3-year rule?

Here is how the rule works, in plain words ^[1]^[3]:

Most nonprescription drugs, including sunscreen, need an expiration date.
The exception is a product whose maker has stability data showing it stays stable for at least three years. That product can skip the printed date ^[3].
So if a sunscreen has no expiration date, the FDA says to consider it expired three years after purchase ^[1].

The legal text is in the federal drug manufacturing rules, 21 CFR 211.137. Section (h) says the date rule is not enforced for over-the-counter drugs that are stable for at least 3 years, backed by stability data ^[3]. That is where the "three years" comes from.

Where do you find the date on the bottle?

Look on the crimp at the end of a tube, the bottom of a bottle or can, or near the lot number. It is often stamped or printed, not part of the main label art. While you are checking, read the Drug Facts box too; it lists the active ingredients, the water-resistance time, and the warnings. Our Drug Facts guide shows what each part means.

If you can't find any date, the AAD suggests writing the purchase date on the container with a marker, so you know when three years are up ^[2].

Can you use sunscreen after it expires?

The FDA says no. Its advice is to ^[1]:

Not use sunscreen that is past its expiration date.
Not use sunscreen with no expiration date that you did not buy within the last three years.
Throw away expired sunscreen, because it may no longer be safe and effective.
Throw it away if you don't know how old it is.

An AAD dermatologist describes what happened when her husband used a tube of the previous year's sunscreen that had expired. He applied and reapplied it while gardening all day, and the next day "he was beet red" ^[2].

Old sunscreen can also bother your skin. Another dermatologist told the AAD that expired sunscreen "may break down and cause irritated skin or even an allergic skin reaction," and that mold or bacteria can grow inside the container over time ^[2].

What are the signs sunscreen has gone bad before its date?

Sunscreen can spoil early. The AAD says to replace it, even if the date hasn't passed, when you see any of these signs ^[2]:

Sign	What it looks like
Color change	The lotion looks darker, yellower, or a different shade than when new
Odor change	It smells different or bad
Separation	You see layers, like an oil sitting on top of a solid
Texture change	It feels dry or flaky instead of smooth

If the sunscreen fails any of these checks, replace it. Don't try to shake or stir a separated bottle back into shape and rely on it at the beach.

How does heat damage sunscreen?

Heat speeds up the breakdown. The AAD says sunscreen left in direct sunlight or in a hot, closed space like a car can break down faster ^[2]. That is one reason sunscreen can go bad before its printed date.

The FDA agrees. It recommends that you not leave sunscreen containers in direct sun, and that you wrap them in a towel or keep them in the shade when you are out in the heat for a long time ^[1]. This is why US sunscreen labels must say: "Protect the product in this container from excessive heat and direct sun" ^[1].

How should you store sunscreen?

Simple habits keep a bottle working until its date:

Keep it in a cool, shaded spot at home, like a cupboard, not a sunny windowsill.
At the beach or pool, keep it in a bag, under a towel, or in the shade ^[1].
Don't leave it in a hot car ^[2].
Close the cap tightly after each use.
Write the purchase date on bottles with no printed date ^[2].

Will you even finish the bottle in time?

If you use the right amount, probably. The FDA says an average adult or child needs at least one ounce of sunscreen, about a shot glass, to cover the whole body ^[1]. By that math, an 8-ounce bottle holds only about eight full-body applications. The AAD notes that a typical 6-ounce spray bottle holds about six applications ^[6].

Consumer Reports says most people use less than half the amount they should, and that using half the amount gives you about half the SPF protection ^[5]. So a bottle that lasts for years is a warning sign twice over: it may be expired, and you have probably been using too little. Our dosing guide has the full numbers.

What about sunscreen you only use in winter?

Year-round users go through bottles faster, but a "ski bag" or "beach bag" sunscreen can sit for a long time. Check its date each season. Our winter sunscreen guide explains why UV still matters when it's cold.

Does a fresh bottle guarantee the SPF on the label?

No. A new bottle only means the formula hasn't broken down yet. Consumer Reports found that most of the 130 sunscreens it tested had an average tested SPF below the number on the label ^[5]. Our label vs. tested SPF explainer covers why, and our rankings sort products by tested results so you can replace an old bottle with a strong one.

This article is general information, not medical advice. Ask a doctor before using sunscreen on a baby under 6 months old ^[1].

FAQ

Does unopened sunscreen expire?

Yes. The FDA's advice is not to use any sunscreen past its expiration date, and it does not make an exception for unopened bottles ^[1]. Heat can still break down an unopened bottle ^[2].

Does makeup or moisturizer with SPF expire?

Yes. The FDA regulates makeup and moisturizers with SPF labeling as both cosmetics and drugs, so they must be stability tested and carry expiration dates ^[4].

Is it dangerous to use expired sunscreen?

The main risk is sunburn, because the protection may be weaker ^[2]. Expired sunscreen may also irritate skin or cause an allergic reaction, and mold or bacteria can grow in old containers ^[2].

How long does sunscreen last after opening?

US rules don't set a separate "after opening" time for sunscreen. Go by the expiration date, or three years from purchase if there is no date, and toss it sooner if it changes color, smell, or texture ^[1]^[2].