I’m a skincare magpie.
Always looking for the next big thing. And when I find it, the old one gets unceremoniously dumped into a drawer.
But, after a while, I start to feel the guilt gnawing at me. It’s not like I am emotionally attached to a serum or anything like that (gosh, that would be weird!). It’s just that I hate waste.
Skincare products aren’t like an old book you can set aside, pick up years later, and still get a lot out of it. They’re more like milk. Wait a little too long to finish it, it’ll go bad.
Best case scenario, its active ingredients stop working. You may just as well be splashing water all over your face. Worst case scenario, bacteria will wave you hello when you open that jar. Ewww!
So, how you can figure out if a skincare product has expired and it’s time to toss it away? Here are the signs to look out for:
PAO (and its limitations)
If you’re a fellow European, you’ve probably noticed that most of your skincare products feature a little open jar with a number followed by the letter M either on their bottles/jars or their boxes.
That’s the PAO (Period After Opening) symbol. The letter M stands for months and the number for the number of months the product is good after opening. So, for example, if you’re using a cream with 12 M stamped on its tube, it means you have a year to use it before it goes bad.
But, there’s an exception: any product that lasts 30 months or slightly less doesn’t need to display the PAO symbol. Instead, it’s only required to have a “best before” date.
In the USA, things are different. There, only OTC drugs (such as sunscreens and anti-acne treatments) are required to show their expiration date on the packaging.
Having the expiration date printed on the packaging is very useful. But, not enough. PAO and “best before dates” don’t take into consideration how the products are stored once we bring them home from the shops.
Your brand new sunscreen may have a PAO of one year, but if you keep forgetting it in your car during the blazing hot summer months, it may not survive the week!
Rough skincare products expiration dates
So, if you live somewhere expiration dates don’t appear on the packaging, how can you tell when it’s time to toss something? Here are some rough guidelines to help you out:
(P.S. Same limitations apply. If you don’t store your skincare products properly, they’ll go bad a lot sooner.)
Face and eye moisturizers
A simple, basic moisturizer without antioxidants, retinoids or sunscreen ingredients can last up to 18 months.
Creams and serums with antioxidants and retinoids
These ingredients can oxidize (ie lose their effectiveness) when exposed to light and air so:
- When packaged in a jar: they are effective for only a month or two.
- When packaged in an opaque tube or bottle: they’re effective for up to 9 months.
After that time has passed, you can still use the cream. But it’ll only moisturize your skin. All its anti-aging properties have evaporated into thin air.
UV filters stop working overtime too. That’s why your sunscreen is usually good only for one year.
Organic products are very delicate. They usually have very weak or, worse, no preservative systems, so they are more prone to bacteria contamination. Use them within 4-6 months.
Related: When do makeup products expire?
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5 signs your skincare product has gone bad
Ok, these are the general rules. But, how can we tell if something has gone bad before its time? Here are 5 tell-tale signs to look out for:
1. Has the product changed colour?
Skincare products are sensitive to light. If it has taken on a yellowish or brown colour, it’s time to toss it.
2. Does it smell differently?
If it has a rancid, foul or just weird scent, throw it away.
3. Has it separated into two layers?
Once the product has separated into two layers, you can’t simply shake them back together. You’ll have to throw it out.
4. Is the texture different?
If the consistency has become runny, lumpy, too thick or has changed in any way, then the product isn’t good anymore.
5. Black spots have appeared?
Now we’re in dangerous territory. If you notice any black, fuzzy spots, then your product is very likely contaminated with bacteria. Throw it in the bin straight away. If you use it, you’ll risk an infection.Using expired skincare products is dangerous! Check out these 5 signs for clues they've gone badClick To Tweet
How to make your skincare products last longer
So now we know when it’s time to throw away our beloved lotions and potions. But I bet you don’t want to throw away a bottle of moisturizer that’s still half full because you stored it in the wrong place or did something else to ruin it without even realising it.
So, what can we do to make our skincare products last longer? Here are my fave tips:
1. Store your products away from light and heat:
The best skincare ingredients (antioxidants, retinoids and UV filters) don’t like light and heat. When they come in contact with them, they start to lose a bit of their effectiveness. To prevent that from happening, simply store them in a cool and dark place, such as a drawer, a cabinet, or even the fridge.
P.S. The bathroom cabinet doesn’t count. The temperature and humidity in the bathroom change all the time (blame those hot showers you love so much). That’s a recipe for disaster!
2. Write the purchase date on the product
Whenever you buy a new skincare product, write the purchase date on the packaging. If you remember when you’ve bought it, it’ll be easier to figure out how long it’s going to be good for.
3. Fingers off
If you really want to buy something packaged in a jar, at the very least don’t pick up the product with your fingers. Use a spatula instead. That way, there’s no risk you’ll contaminate its contents with bacteria (even if your hands seem clean, they are full of bacteria).
Do you throw away skincare products past their expiration dates or do you wait until you notice some change in them?
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