At Savzz, we help people find ways to spend less and get more from what they buy. This calculator does something most beauty guides skip entirely, it tells you exactly when your makeup expires, how much expired product you have sitting in your collection right now, and what that has cost you.
Most people know vaguely that makeup expires. Very few know the actual dates, the real hygiene risks, or how much money quietly goes in the bin every year on products that went past their use-by date before they were finished.
nyxWho Is This Calculator For?
This tool is useful for anyone who wears makeup regularly or has a collection of beauty products at home. It is especially helpful if you are:
- Someone with a large makeup collection who has products bought months or years ago and is not sure which ones are still safe to use
- A beauty lover who buys new products often and wants to track what is actually getting used versus what is sitting in a drawer going off
- Someone who has had a skin or eye reaction and wants to check whether an expired product might be the cause
- Anyone trying to be more mindful about beauty spending and wanting to see the real cost of products that expire before they are finished
- A parent or teenager learning about makeup for the first time and wanting to understand how long products actually last
- Someone doing a makeup drawer clear-out and wanting a structured way to decide what stays and what goes
Who Is This Calculator Not Suitable For?
- Anyone looking for medical advice about skin or eye reactions. The hygiene risk scores in this calculator are awareness indicators based on product type and storage conditions. They are not a clinical assessment. If you have had a skin reaction, eye infection, or other health concern related to a beauty product, please speak to a GP or pharmacist.
- Professional makeup artists working with shared kit. Professional makeup hygiene for shared use involves different standards and protocols that go beyond what this calculator covers. This tool is designed for personal home use.
How to Use the Makeup Shelf Life Calculator
Add each product from your makeup collection one at a time using the form above the results. For each product you will need:
The product type. Choose from the dropdown: mascara, foundation, lipstick, eyeshadow, and so on. If you know the PAO symbol from the packaging, select it from the list. If you do not know it, the calculator uses the standard default shelf life for that product type.
When you opened it. This is the key date. If you cannot remember exactly, pick the closest month. The calculator works out the expiry date from there.
What you paid. Optional but recommended. This lets the calculator show you how much expired product has cost you and gives you a cost per use figure.
How often you use it. Enter times per week to get an accurate cost per use calculation.
Storage conditions. Tick any that apply: kept in a bathroom, exposed to sunlight, shared with others, or used with unwashed brushes. These all affect the hygiene risk score.
Products are added to your collection list below the form. You can remove any product and the totals update automatically.
Add each product from your makeup collection, enter when you opened it and what you paid, and the calculator tells you what is safe, what is expired, and how much is being wasted.
Add a Product
What Is a PAO Symbol and Where Do You Find It?
PAO stands for Period After Opening. It is the small symbol printed on makeup and skincare packaging that looks like an open jar or pot with a number and the letter M inside it. The M stands for months.
A mascara with 3M on the packaging means it is safe to use for three months after opening. A foundation with 12M means twelve months. An eyeshadow palette with 24M means two years.
The PAO symbol is almost always on the bottom or back of the product. On smaller items like lip glosses or mascaras it can be very small. On outer packaging like boxes it is usually printed alongside other cosmetic symbols.
If you cannot find the PAO symbol, do not worry. The calculator uses well-established default shelf lives for each product type based on standard formulation guidelines. These defaults are on the conservative side to keep you safe.
How Long Does Makeup Actually Last?
Most people are surprised by how short some makeup shelf lives are, particularly for eye products. Here is a straightforward guide to the main categories:
Mascara: 3 to 6 months. This is the shortest shelf life of any makeup product and one of the most important to stick to. Every time you pump the wand back into the tube you push air in and create conditions where bacteria multiply fast. Using expired mascara is one of the most common causes of eye infections including conjunctivitis and styes.
Liquid eyeliner: 3 to 6 months. The same bacteria risk applies as mascara. The fine tip of a liquid eyeliner sits very close to the eye and contamination builds up quickly. Pencil eyeliner lasts much longer, up to 24 months, because you sharpen away the exposed surface regularly.
Liquid foundation: 12 months. Liquid products harbour bacteria more readily than powders. Pump bottles are safer than products you dip fingers into because there is less contamination risk with each use.
Powder foundation and eyeshadow: 24 months. Powder products have the longest shelf lives because their low moisture content makes it much harder for bacteria to grow. Clean brushes extend their life further.
Lipstick: 12 to 24 months. The wax-based formula resists bacteria better than liquid products. Wiping the tip with a tissue before and after use keeps lipstick in good condition for longer.
Lip gloss: 12 months. The wand applicator picks up bacteria from your lips every time you use it, so gloss expires faster than lipstick despite having a similar formula.
SPF makeup: 6 to 12 months. This is the category where expiry matters most for reasons beyond hygiene. The SPF filters in tinted moisturisers, BB creams, and foundations with sun protection degrade over time. An expired SPF product may feel and look exactly the same but provide much less protection than the label claims. Using it in place of a current-date SPF could leave your skin unprotected without you realising.
Nail polish: 24 months. Nail polish goes thick and streaky past its best but the hygiene risk is low because it does not contact mucous membranes. The reference table in the calculator includes all these shelf lives in one place.
The Real Cost of Expired Makeup in the UK
Research from Statista and the British Beauty Council estimates that UK women spend an average of around £500 per year on makeup and beauty products. A 2023 study by skincare brand Medik8 found that the average UK woman has around £500 worth of makeup sitting unused or expired in their collection at any given time.
Here is where that waste tends to come from:
Impulse buys that never became habits. A foundation bought because it was on offer, used twice, and forgotten. A lipstick shade bought after seeing it on a blogger that did not suit in real life. These sit in the collection until they expire without ever being finished.
Products bought in bulk or as gifts. Eyeshadow palettes with twelve or more shades where most of the colours go barely touched. Perfume sets bought as gifts that are not the right scent. Gift sets where you use one product and leave the rest.
Seasonal products that do not get used year round. A bronzer used heavily in summer then ignored through winter. A lip colour bought for a specific occasion. SPF makeup bought for a holiday that gets one or two uses and then sits for a year.
Premium products used too sparingly. Someone who buys an expensive serum and uses half the recommended amount to make it last longer ends up with the product expiring before it is finished, negating the economy they were trying to make.
The calculator puts a real number on the expired products in your own collection so the waste feels concrete rather than theoretical.
Why Bathroom Storage Is Worse Than You Think
Most people keep their makeup in the bathroom. It is where they get ready, so it makes sense. But bathrooms are one of the worst places to store makeup and significantly speed up how quickly products expire.
Every shower and bath creates humidity. Steam and warm moisture are exactly the conditions that help bacteria multiply inside products. Foundation stored in a bathroom expires faster than the same product stored in a cool bedroom. Mascara stored next to the shower expires faster than mascara in a makeup bag.
The other bathroom problem is temperature fluctuation. Bathrooms get hot during showers and cool down between uses. Repeated heating and cooling breaks down product formulas faster than stable temperature storage.
SPF products are particularly affected. UV filters degrade faster in warm, humid conditions. An SPF foundation or tinted moisturiser stored in a sunny bathroom may lose its protection well before the PAO date on the packaging suggests.
The ideal storage for most makeup is a cool, dark place away from moisture. A dedicated makeup bag or drawer in a bedroom is better than a bathroom shelf for almost every product type.
Why Sharing Makeup Increases the Risk
Sharing makeup feels normal, trying a friend’s lipstick, borrowing someone’s eyeshadow palette, using a tester in a beauty store. But sharing makeup products transfers bacteria between people in ways that increase the contamination of both users’ products.
Eye products are the highest risk category. Sharing mascara or liquid eyeliner is one of the most effective ways to spread conjunctivitis, styes, and other eye infections. Herpes simplex can also be spread through shared lip products, though this is less commonly discussed.
If you do share makeup, the safest approach is to use a clean disposable applicator for each person rather than the original wand or brush, and to avoid sharing any eye product entirely.
The calculator’s storage conditions section includes a shared products tick box because sharing is a genuine factor in how quickly a product’s hygiene risk increases.
How to Make Your Makeup Last Longer and Waste Less
- Write the opening date on the bottom with a marker pen. This takes five seconds and removes all the guesswork when you are trying to remember how long you have had something. A small sticker on the base works equally well.
- Clean your brushes and sponges regularly. Dirty brushes transfer bacteria into product every time you use them. Cleaning brushes once a week for everyday brushes and once a month for occasional-use brushes keeps both the brushes and the products they touch cleaner for longer.
- Move makeup out of the bathroom. A makeup bag in your bedroom, a small dresser or a drawer away from moisture, makes a real difference to how long products stay fresh.
- Buy smaller sizes of products you use infrequently. A full-size foundation you only wear occasionally is almost guaranteed to expire before it is finished. Travel or mini sizes of products you use rarely make much more financial sense.
- Avoid double-dipping fingers into pot products. Cream blushers, lip balms in pots, and any product you apply with your finger should be scooped out with a clean spatula or applied with a clean brush rather than using fingers directly. This keeps the product in the pot much cleaner.
- Check eye products every three months. Set a recurring phone reminder. Mascara and liquid eyeliner have the shortest shelf lives of any makeup product and the highest health consequences if used past their best. Three months goes faster than you expect.
- Search Savzz before replacing anything. When a product does expire and you need to replace it, check for a discount code before you buy. Our cosmetics deals and skincare vouchers cover a wide range of UK beauty retailers. Saving 10% to 20% on replacement products over the course of a year adds up meaningfully.
How to Read Makeup Labels: PAO, Best Before, and Batch Codes
Makeup packaging includes several different types of date and safety information. Here is what each one means:
PAO symbol (open jar icon with a number and M): Period After Opening. This is how long the product is safe to use after you first open it. Most makeup only has a PAO symbol, not a fixed expiry date, because the shelf life depends on when you open it rather than when it was made.
Best before date (hourglass icon or date printed on packaging): Some products, particularly those with SPF or natural formulas, include a fixed best before date. This applies whether the product is opened or not. If a product has both a PAO and a best before date, whichever comes first is the one to follow.
Batch code: A series of letters and numbers printed on the packaging that identifies when the product was made. You can enter batch codes into websites like CheckFresh.com to find the manufacture date. This is useful if you have an unopened product and want to know whether it was made recently or has been sitting on a shelf for a long time.
Period After Opening does not start at manufacture. An unopened mascara can sit in your drawer for two years before you open it without the three-month clock starting. The PAO countdown begins on the day you first open the product.
The Smarter Way to Buy Makeup: Calculate First, Then Find a Code
Knowing what expires when and how often you actually use each product type helps you buy more deliberately. Buying a full-size product you will only use occasionally is a common but avoidable way to waste money on beauty products.
When you do need to replace an expired product or add something new to your collection, check Savzz first. We round up working discount codes for cosmetics, skincare, haircare, fragrance, and beauty tools across hundreds of UK retailers. Browse our cosmetics deals, skincare vouchers, bath and body offers, and fragrance promo codes before you checkout on anything beauty-related.
Frequently Asked Questions
How do I know if my makeup has expired?
The most reliable way is to check the PAO symbol on the packaging and compare it to when you opened the product. Beyond that, expired makeup often shows visible signs, mascara goes dry and clumpy, foundation separates or smells off, lipstick develops a waxy or rancid smell, and cream products change texture. If a product looks, smells, or feels different from when you bought it, it is worth checking whether it has expired.
Is it safe to use expired powder makeup?
Powder products like eyeshadow palettes, pressed powder, and powder blush have a lower hygiene risk than liquid or cream products because their low moisture content makes it harder for bacteria to grow. Using a powder product slightly past its PAO date with clean brushes is lower risk than using an expired mascara or liquid liner. That said, the product formula may have degraded and performance will not be as good as a fresh product.
Can expired makeup cause spots or breakouts?
Yes. Expired foundation, concealer, and primer can harbour bacteria that cause breakouts, particularly if they are liquid or cream formulas. Products that have been stored in a bathroom or used with dirty brushes degrade faster and are more likely to cause skin reactions. If you notice your skin breaking out more than usual, checking whether your base products are past their best is a good starting point.
What happens if I use expired mascara?
Expired mascara is one of the more common causes of eye infections including conjunctivitis, styes, and blepharitis. The warm, moist environment inside a mascara tube is ideal for bacteria to multiply, and every use of an expired product introduces those bacteria to the area around your eye. If your eyes feel irritated, red, or watery after using mascara, stop using it and check when you opened it.
Does unopened makeup expire?
Unopened makeup lasts much longer than opened products because the PAO clock has not started. However, very old unopened products, particularly those with SPF, natural or organic formulas, or those stored in warm or sunny conditions, can degrade over time. If you have an unopened product bought more than three or four years ago, checking the batch code to find the manufacture date is worth doing before you open it.
How do I find the PAO symbol on my makeup?
Look for a small icon that looks like an open jar or pot with a number inside followed by the letter M. It is usually on the bottom or back of the product. On very small products it can be embossed into the packaging rather than printed, which makes it harder to spot. If you genuinely cannot find it, the calculator uses standard default shelf lives for each product type.
Who built this calculator?
The Savzz Makeup Shelf Life Calculator was built by the team at Savzz.co.uk, a UK discount code and money-saving site. We built it because most beauty content about expiry dates covers the basics but stops there. A tool that tracks your whole collection, calculates the money wasted on expired products, shows cost per use, and factors in storage conditions did not exist in one place.
It is completely free to use with no sign-up required.
