Yes, makeup actually does expire. Every cosmetic product has a shelf life, and once that window closes, the preservatives stop working, bacteria multiply, and the formula breaks down. I’ve been digging through my own collection lately and realized I had a mascara from 2026 hiding in the back of a drawer, which is exactly what pushed me to write this guide.
The tricky part is that cosmetics don’t always come with a clear “use by” date printed on the front. Instead, brands rely on symbols, batch codes, and abbreviations that can feel like a foreign language. Below, I’ll walk you through exactly how to read cosmetic labels, decode the Period After Opening symbol, and figure out when your favorite products have officially hit their expiration.
This matters because using expired makeup, especially around your eyes, can lead to irritation, breakouts, and even infections. Let’s clear up the confusion once and for all.
What Is Cosmetic Shelf Life and Why Does It Matter?
Cosmetic shelf life is the length of time a product stays safe and effective to use, from the day it’s manufactured until it starts breaking down. For unopened color cosmetics, that window typically runs between 12 and 24 months, depending on the formula. Once you crack the seal, that clock shortens dramatically because every time your fingers, a brush, or a sponge dips into the product, you introduce bacteria.
I think of shelf life as having two separate timers. The first runs while the product sits sealed on a shelf. The second starts the moment you open it. Both timers matter, and both can tell you when to toss a product.
So why does makeup actually go bad? Three things happen over time. Preservatives lose their strength, emulsions (the water and oil mixtures that make creams and foundations smooth) begin to separate, and pigments oxidize or dry out. Once any of these processes kick in, the product is no longer performing the way it was designed to.
How to Read the PAO (Period After Opening) Symbol?
The Period After Opening symbol is your single best tool for figuring out how long a product stays safe once you’ve opened it. Look for a small icon that looks like an open jar with a number and the letter “M” inside it, like “12M” or “24M”. That number tells you the product is good for that many months after opening.
For example, a foundation labeled “12M” should be tossed 12 months after you first break the seal, no matter how much is left inside. I write the date I opened mine right on the bottom with a Sharpie so I never have to guess.
The PAO symbol is required on cosmetics sold in the European Union, and most major brands use it worldwide for consistency. If you see only the number and “M” without the open jar icon, that’s the same rule. The hourglass symbol you sometimes spot on packaging is different; it means the product has a fixed expiration date (often for items with shorter or longer fixed lives, like sunscreen-adjacent makeup).
BBE (Best Before End) vs PAO: What’s the Difference?
BBE stands for “Best Before End” and tells you the date a product is at its best quality, similar to food labels. You’ll usually see it as “BBE: 03/2026” or “EXP: 06/2026“. A BBE date is about quality, not safety, meaning the product may still be usable shortly after but could start to lose effectiveness.
PAO, on the other hand, is about safety from the moment you open the product. Once exposed to air, fingers, and bacteria, the countdown starts regardless of how much product is left.
Here’s how I remember it: BBE applies to sealed, unopened products and is more of a “best quality” window. PAO applies after you’ve cracked the seal and is a hard safety limit. Some products carry both, some carry only one, and some carry neither, which is why understanding the rest of the label matters too.
Makeup Expiration Timeline by Product Type
Not all makeup expires at the same rate. I’ve put together this timeline based on typical industry guidelines and what dermatologists and brand chemists recommend.
Mascara is the shortest at 2 to 4 months after opening. The wet, dark tube is a perfect breeding ground for bacteria, especially with the wand going in and out daily. Liquid eyeliner lasts about 3 months. Liquid foundation and concealer last roughly 12 months, while cream blush and cream eyeshadow clock in at 6 to 12 months.
Lipstick and lip gloss last 12 to 18 months, though I’ve had tubes last longer if I stored them in a cool, dry place. Powder products are the marathon runners: pressed powder, blush, bronzer, and eyeshadow last 18 to 24 months. Pencils (lip, eye, brow) can last 12 to 24 months because you sharpen them, removing the outer layer each time.
Unopened products generally last 2 to 3 years from manufacture, though the FDA doesn’t require brands to print this. If you’re unsure how old something is, a batch code lookup can help.
Signs Your Makeup Has Expired
Sometimes the expiration date is unclear or missing, and that’s when your senses become the best judge. I always do a quick sniff, look, and feel test before using anything I’m unsure about.
Smell is the biggest giveaway. Expired makeup often smells off, waxy, sharp, or just “wrong” compared to when you first opened it. Lipsticks that smell like crayons or old crayons are usually oxidized. Texture changes are another red flag: foundation that separates and won’t mix back together, mascara that clumps even after pumping the wand, or cream products that get grainy are past their prime.
Color shifts are also telling. Foundations that turn orange or pink, eyeshadows that develop a white or chalky film, and lipsticks that look dull rather than creamy have oxidized. Finally, if a product causes any stinging, breakouts, or irritation when you apply it, that’s a clear signal to toss it, no matter how recent the purchase.
Eye Makeup Safety Warnings: Why Mascara Expires Fastest
If there’s one product you should never stretch past its expiration, it’s mascara. The eye area is one of the most sensitive and vulnerable parts of your body, and mascara’s wet, dark tube creates the perfect environment for bacteria like staphylococcus and pseudomonas to grow.
Every time you pump the wand in and out (a habit I’m guilty of, by the way), you push air into the tube, which accelerates drying and bacterial growth. Ophthalmologists I trust recommend replacing mascara every 2 to 3 months, even if it still seems usable. Liquid eyeliner gets the same treatment.
If you’ve had an eye infection, a stye, or conjunctivitis, throw away every eye product you were using at the time. Bacteria can linger in the tube and reinfect you. It’s one of the few cases where being cautious is always the right move.
How to Check Expiry Without a Visible Date Using Batch Codes?
Many cosmetics don’t print a clear expiration date, but almost every product has a batch code printed somewhere on the packaging. Usually it’s a short alphanumeric string stamped on the bottom, the crimp of a tube, or the side of a box. This code lets the manufacturer trace the exact batch and production date.
To decode it, I use free tools like CheckCosmetic.net or the brand’s own website. Some brands, including MAC, Estée Lauder, and L’Oréal groups, have official batch code checkers. The format varies by brand; some use Julian date codes, some use week/year formats, and some encode the production date internally.
If you can’t find a tool for your specific brand, contact the company’s customer service with the batch code. Most will tell you the manufacture date, and from there you can estimate expiration. As a rule of thumb, add 2 to 3 years for unopened products and the PAO number (if known) for opened ones.
Storage Tips to Extend Your Makeup’s Shelf Life
How you store your makeup affects how long it lasts. Heat, humidity, and direct sunlight are the three biggest enemies. I keep mine in a cool, dry drawer, away from the bathroom window where steam from showers can settle on products.
Avoid storing makeup in your car, where temperatures swing wildly, or in any spot that gets direct sunlight. Powders can crack and fade. Lipsticks can melt and reform with a weird texture. Creams can develop mold faster in warm conditions.
Always close lids tightly after use, and never share eye makeup or use testers without a disposable applicator. The less bacteria you introduce, the longer the preservatives can do their job.
Clean Beauty and Natural Makeup Shelf Life Differences
Clean and natural makeup formulas often use fewer synthetic preservatives, which means they can expire faster than conventional products. If you shop in the clean beauty space (which we cover a lot at Beauty Deli), expect shorter windows, especially for water-based items like foundations and cream blushes.
To compensate, look for products with airless pump packaging, which limits air exposure. Single-use packets or smaller sizes can also help you use up a product before it goes bad. Some brands print a “once opened, use within” timeframe right on the carton, even if the PAO symbol isn’t on the bottle itself.
Refrigeration can extend the life of some natural products (especially those with probiotics or botanical extracts), but avoid putting powders or anything that can condense moisture in the fridge. Cold plus humidity leads to clumping and bacterial growth, which defeats the purpose.
Buying and Keeping Makeup: Smart Consumer Habits
The easiest way to avoid expired makeup is to buy less, more deliberately. I’m a recovering impulse buyer, so I get the appeal of a sale, but a mascara you never use is more expensive than the one you reach for every day.
Before buying, check that the product has a clear PAO or BBE marking. If it doesn’t, decide whether you’re likely to use it up within a reasonable window. For eye makeup, lean toward smaller sizes. For foundations, only buy a new bottle when your current one is running low, not months ahead.
Once you’re home, mark open dates on everything with a permanent marker or a small sticker. I use a tiny dot of nail polish on the bottom of cream products to track the month I opened them. Rotate older products to the front of your drawer so you actually use them. And every six months, do a quick sweep: anything past its window, anything that smells off, anything you haven’t touched in over a year.
Finally, remember that “natural” doesn’t mean “safer past expiration.” In fact, the opposite is often true. Treat every cosmetic, clean or conventional, with the same expiration mindset.
How to Safely Dispose of Expired Makeup?
Most makeup shouldn’t go in the regular trash if you can avoid it, especially liquids and aerosols. Check your local recycling guidelines; many foundations, lipsticks, and mascara wands can be recycled through programs like Origins’ Recycle at Aveda, TerraCycle, or similar take-back schemes.
If recycling isn’t an option, empty the product into a sealed bag before tossing it to prevent leaks. For powders, you can crush them and mix with a small amount of rubbing alcohol to render them unusable before disposal. Never pour liquid makeup down the drain; it can clog pipes and harm aquatic ecosystems.
Disposing of makeup responsibly also stops other people from accidentally using it. If you have gently used products you no longer want, consider donating unopened or barely used items to women’s shelters or organizations like Beauty Bus, which accept sealed, unexpired cosmetics.
FAQs
How do you read the expiration date on makeup?
To read the expiration date on makeup, look for one of two markings. The PAO (Period After Opening) symbol shows a small open jar icon with a number and u0022Mu0022 inside, like u002212Mu0022 or u002224Mu0022. This tells you how many months the product is safe to use after opening. Some products instead show a BBE (Best Before End) date or an hourglass symbol with a specific month and year, indicating when the product expires from manufacture. Both symbols are usually on the back, bottom, or crimp of the packaging.
Can I use 10 year old makeup?
No, you should not use 10-year-old makeup. Even unopened cosmetics typically have a maximum shelf life of 2 to 3 years. After a decade, the preservatives have long stopped working, the formula has oxidized or separated, and bacteria are likely present, even in sealed containers. Using products this old can cause skin irritation, eye infections, or allergic reactions. Dispose of any makeup older than 3 years, regardless of whether it has been opened.
Is it safe to use 20 year old makeup?
No, using 20-year-old makeup is not safe under any circumstance. At that age, the active ingredients have degraded, preservatives have failed, and the product has almost certainly been contaminated. Even powder products that seem dry and stable can harbor bacteria, fungi, and mold over two decades. Treat any makeup older than a few years as expired and discard it.
Do makeup products actually expire?
Yes, makeup products do actually expire. Every cosmetic has a shelf life that depends on its formula, packaging, and how it’s stored. Most opened makeup lasts between 3 months (mascara) and 24 months (powder products), while unopened products typically remain stable for 12 to 36 months. The preservatives in makeup lose effectiveness over time, allowing bacteria and mold to grow, which is why using expired cosmetics can lead to skin irritation and infections.
The Bottom Line on Cosmetic Expiration
So, does makeup actually expire? Absolutely. Every product on your vanity has a clock, and once preservatives start breaking down, your makeup stops being the safe, effective formula it was designed to be. The shortest lifespans belong to mascara and liquid eye products (2 to 4 months), while powders and pencils can stretch up to two years. Unopened products generally last 2 to 3 years.
The easiest path forward is simple: check for the PAO symbol, write the open date on the bottom of every new purchase, store products in a cool, dry place, and toss anything past its window or that smells, looks, or feels off. Your skin, your eyes, and your wallet will thank you for keeping your collection fresh.