It’s easy to keep makeup for far longer than you intended.
That lipstick you bought years ago may still look perfectly fine. Your favourite eyeshadow palette might still have plenty of product left. And throwing away a foundation that isn’t finished can feel wasteful.
But makeup doesn’t last forever.
Cosmetic products can change over time, particularly after they’re opened and repeatedly exposed to air, skin oils, moisture and bacteria.
Knowing when to replace your makeup can help you maintain a cleaner and more organised beauty collection.
Does Makeup Actually Expire?
Yes.
Cosmetics can deteriorate over time.
Some products change more quickly than others because of their formula, packaging and how they’re used.
Products that come into direct contact with the eyes generally deserve particular attention.
The most useful approach isn’t simply asking, “When did I buy this?”
You should also consider:
- When you opened it
- How often you use it
- Whether you share it
- How it has been stored
- Whether its smell has changed
- Whether the texture has changed
- Whether the product is performing differently
What Does the PAO Symbol Mean?
Many cosmetics display an open-jar symbol showing a number followed by the letter “M”.
For example, you might see something such as 12M.
This refers to the product’s recommended period of use after opening.
The important word is after opening.
A product that has been sitting unopened isn’t necessarily following the same timeline as one you’ve been using every day.
When you open a new beauty product, it’s useful to make a small note of the date.
You don’t need a complicated tracking system.
A simple note on your phone can be enough.
When Should You Replace Mascara?
Mascara deserves particular attention because it is repeatedly used around the eyes.
Every time you insert and remove the wand, air enters the tube.
The product can also come into contact with lashes and the surrounding eye area.
Don’t keep using mascara simply because there is still product left.
Replace it according to the manufacturer’s recommended period after opening, and replace it sooner if the formula develops an unusual smell, changes significantly or becomes difficult to use.
If you’re interested in different mascara formulas, Bopper’s Mascara and Eyeliner Australia guide explains some of the differences between eye makeup options.
What About Liquid Eyeliner?
Liquid eyeliner also deserves regular attention because it is applied directly around the eye.
If the product becomes:
- Dry
- Thick
- Clumpy
- Difficult to apply
- Noticeably different in smell or texture
it may be time to replace it.
Don’t add water or other liquids to revive an old eye product.
A new product is generally a better solution.
How Long Does Foundation Last?
Foundation can have a relatively long usable life compared with some eye products, but that doesn’t mean you should keep it indefinitely.
Pay attention to changes in:
- Smell
- Colour
- Texture
- Separation
- Application
- Consistency
Some separation can be normal depending on the formulation, particularly if the product needs to be shaken before use.
But if the product behaves differently from when you first opened it, check the manufacturer’s instructions and consider replacing it.
Bopper’s Foundation Undertone & Shade Guide can help when you’re choosing a replacement foundation and deciding what finish and shade you actually need.
How Long Does Lipstick Last?
Lipstick can often remain usable for longer than mascara because it isn’t stored inside a moist tube with an applicator that repeatedly travels from the product to the mouth.
However, lipstick still needs to be replaced eventually.
Look for:
- Unusual smell
- Significant texture changes
- Sweating or oil separation
- Crumbling
- Unusual dryness
- Changes in colour
If a lipstick no longer feels or applies the way it originally did, it’s worth reconsidering whether it belongs in your collection.
For more guidance on choosing lip products, see Bopper’s Lipstick & Lip Gloss Australia guide.
What About Powder Products?
Powder products such as eyeshadow, blush and powder foundation can often last longer than liquid cosmetics.
However, the product still comes into contact with brushes, skin and the surrounding environment.
Over time, powder products can develop a hard surface that makes them difficult to pick up with a brush.
This can happen because oils from brushes and skin transfer onto the product.
If the colour payoff or texture has changed significantly, it may be time to replace it.
For eyeshadow in particular, don’t ignore changes in smell, texture or appearance.
Bopper’s Eyeshadow Palette AU guide covers how to choose palettes based on your makeup style rather than simply collecting more colours.
Can You Keep Makeup Longer If You Don’t Use It Often?
Less frequent use may mean less exposure to contamination, but it doesn’t make a product permanent.
The product’s recommended period after opening still matters.
Storage also makes a difference.
A product kept in a cool, dry environment is generally preferable to one repeatedly exposed to heat and humidity.
How Should You Store Makeup?
Your bathroom may seem like the obvious place to keep makeup, but frequent changes in temperature and humidity aren’t ideal for every cosmetic.
Instead:
- Keep products away from excessive heat
- Avoid prolonged direct sunlight
- Close lids properly
- Don’t leave products open unnecessarily
- Keep brushes clean
- Store products according to manufacturer instructions
If you live somewhere with hot summers, pay particular attention to products that can soften or change texture when exposed to heat.
Never Share Certain Makeup Products
Sharing makeup may seem harmless, particularly when you’re getting ready with friends.
However, products that come into direct contact with the eyes or mouth shouldn’t casually be shared.
This includes products such as:
- Mascara
- Liquid eyeliner
- Lip gloss with a wand
- Lip products applied directly to the lips
Makeup tools can also transfer oils and product residue.
Keeping personal products personal is a simple hygiene habit.
What About Makeup That Looks Fine but Is Old?
This is where things can become difficult.
An old product may look completely normal while being past its recommended period of use.
Appearance alone isn’t always enough to determine whether a cosmetic is still suitable.
That’s why keeping track of when you open products can be useful.
When in doubt, check the packaging and manufacturer guidance.
If you can’t remember when you opened an old eye product and it’s been sitting in your collection for a long time, replacing it is generally more sensible than trying to get a few more uses from it.
A Simple Makeup Decluttering System
You don’t have to throw away half your makeup collection at once.
Try this approach.
Step 1: Check your eye products
Look at mascara and liquid eyeliner first.
Step 2: Check your oldest products
Identify anything you can’t remember opening.
Step 3: Look for changes
Check smell, texture, colour and performance.
Step 4: Clean your tools
Wash makeup brushes and sponges and remove products you no longer use.
Step 5: Keep only what you actually wear
If you’ve kept a product for years because you might use it someday, consider whether it genuinely belongs in your routine.
Decluttering isn’t just about expiration.
It’s also about creating a beauty collection that works for your current lifestyle.
Don’t Let a Beauty Sale Encourage Overbuying
Discounts can make it tempting to purchase multiple products simply because they’re cheaper.
But buying three foundations when you only need one doesn’t necessarily save money.
Bopper’s Beauty Sale Australia guide offers a more intentional approach to shopping beauty deals.
Before buying a sale product, ask:
Will I realistically use this before it reaches the end of its recommended period?
That’s often a better question than simply asking whether the discount is good.
The Bottom Line
Makeup expiration isn’t about throwing away products unnecessarily.
It’s about knowing when a cosmetic has reached the end of its useful life.
Pay particular attention to eye products, keep track of when products are opened, follow the manufacturer’s guidance and watch for changes in smell, texture, colour or performance.
A smaller, well-maintained makeup collection can be more useful than a drawer full of products you rarely use.