Do Face Masks Expire? What You Need to Know

January 14, 2026By Experts at Rael

Face masks can be used as part of your self-care routine. Some can be applied daily, while others are best for weekly refreshers. If you're like many others, you might wonder about the shelf life of this type of skincare product.

So, do face masks expire? Skincare face masks do expire. Using fresh ones is the best way to get the most out of these products and help skin feel comfortable and balanced.

This guide will help you know how long face masks typically last, how to tell when they expire, why you shouldn't use one past the expiration date, when to toss an old mask, and how to store new ones.

Do Face Masks Expire? The Short Answer

Yes, like all skincare products, face masks expire. It’s easy to check the expiration date; a face mask should have it on the packaging or container. If stored properly, this is a rough estimate of how long it should still be effective and safe to use.¹

Many people wonder if face masks expire if unopened. While an unopened face mask might last longer than an open tub, it will still degrade over time. Using expired sheet masks may cause them to lose their ability to deliver the results you're after. Depending on the formula, using a face mask past its expiration date could result in a less refreshed or hydrated feel. And certain ingredients, like cica (centella asiatica) or tea tree, are able to provide a soothing feel when they’re fresh.^2,3 That’s why it’s important to know when your face masks expire and to never use an expired one.

How to Check Your Face Mask's Shelf Life

Look for the expiration date on the container or box. It'll usually say "EXP," followed by a numbered date.

You might also see the period after opening (PAO) symbol on a face mask, usually on the back of the package or container. The icon looks like an open lidded jar and will have a number with an M next to it, such as "12M." This number tells you how many months a product will still be good after you open it the first time and break the factory seal.⁴

POA is relevant for different types of face masks that come in lidded tubs or tubes. But sheet masks are individually wrapped, so unlike other skincare products, one use won't affect the rest of the box.

Signs Your Face Mask Is Past Its Prime

Besides the expiration date or POA, how do you know if your face mask is no longer OK to use? Look for the signs⁵:

Texture and feel: If the texture feels slimy or tackier than usual or if the consistency just feels off, the product could be past its prime and starting to degrade. In some cases, a face mask may no longer provide a refreshing feel.
Smell: An expired face mask might not smell as fresh, lose its original scent, or develop a strange odor.
Appearance and moisture: Changes in the color of the essence or a sheet mask that feels unusually dry when you unfold it should be tossed out.
Skin reaction: This should go without saying, but a mask that causes discomfort or a skin reaction shouldn't be used—whether it has to do with expired ingredients, an allergy, or something else.

Why You Should Only Use Fresh Face Masks

The goal with many skincare masks is to offer a hydrated complexion and help skin feel comfortable and refreshed. Others aim to provide a clarifying feel or refine the appearance of pores. Using expired masks may not deliver the refreshed, comfortable feel you expect.

Maintaining a smoother, healthier-looking complexion calls for stable ingredients. That's why fresh face masks are your best bet.

Proper Storage to Protect Your Skincare

Masks should be stored in a cool, dry place. You'll want to keep them away from direct sunlight, somewhere like a drawer, cupboard, or medicine cabinet.⁶ Even leaving them indoors near a window could compromise the ingredients.⁷

Skincare ingredients like succinic acid and wintergreen extract are sensitive to temperature changes and might not perform as inteded if they're not stored properly.^8,9

Refresh Your Collection With Rael

You're wise to check all your skincare products every month or so to see what's past its expiration date or if anything looks off. You can also mark the month you open a product on the container with a permanent marker to know when the PAO is up.

If you're in the market for new face masks, refresh your collection with Rael. We have a range of sheet masks, including our Cycle Synced line that supports your skin through every phase of your cycle.

We also have clay, retinol, collagen, and PDRN face masks that aim to refresh, brighten the look of skin, and support a healthy-looking glow. Browse Rael's mask collection to find the perfect match for your current skin needs.

Sources:

U.S. Food and Drug Administration (FDA). "Cosmetics Safety Q&A: Shelf Life." 25 Feb. 2022, https://www.fda.gov/cosmetics/resources-consumers-cosmetics/cosmetics-safety-qa-shelf-life. Accessed on Jan. 27, 2026.
Sherban A and Wang JV. "Role of Cica (Centella asiatica) in Skincare Formulations: Examination of a Popular Ingredient." 30 Apr. 2022, SKINmed, https://pubmed.ncbi.nlm.nih.gov/35532760/. Accessed on Jan. 27, 2026.
Bekhof AMW, et al. "Safety assessment and adverse drug reaction reporting of tea tree oil (Melaleuca aetheroleum)." 23 Nov. 2022, Phytotherapy Research, https://pubmed.ncbi.nlm.nih.gov/36420525/. Accessed on Jan. 27, 2026.
Campanella L and Costanz C. "PaO (period after opening." Mar. 2011, Journal of Applied Cosmetology, https://scientificeditorial.com/index.php/JAC/article/download/PaO/PaO/293. Accessed on Jan. 24, 2026.
Wang Y, et al. "Why ignore expiry dates on cosmetics? A qualitative study of perceived risk and its implications for cosmetics producers and regulators." Risk Analysis, 21 Apr. 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC12474526/. Accessed on Jan. 24, 2026.
Choi E, et al. "The degeneration of skin cosmetics and the structural changes of the chemical components as an indicator of product shelf life." Journal of Industrial and Engineering Chemistry, 25 Aug. 2021, https://www.sciencedirect.com/science/article/abs/pii/S1226086X21002690. Accessed on Jan. 24, 2026.
Ivarsson J, et al. "Evaluating the Effect of Fresh and Aged Antioxidant Formulations in Skin Protection Against UV Damage." 6 Aug. 2025, Cosmetics, https://www.mdpi.com/2079-9284/12/4/166. Accessed on Jan. 27, 2026.
Ukidve A, et al. "Succinate Buffer in Biologics Products: Real-world Formulation Considerations, Processing Risks and Mitigation Strategies." Jan. 2023, Journal of Pharmaceutical Sciences, https://www.sciencedirect.com/science/article/abs/pii/S0022354922002428. Accessed on Jan. 27, 2026.
Ojha PK, et al. "Volatile Constituent Analysis of Wintergreen Essential Oil and Comparison with Synthetic Methyl Salicylate for Authentication." 17 Apr. 2022, Plants (Basel), https://pmc.ncbi.nlm.nih.gov/articles/PMC9030118/. Accessed on Jan. 27, 2026.
U.S. Food and Drug Administration (FDA). "Shelf Life and Expiration Dating of Cosmetics." 25 Feb. 2022, https://www.fda.gov/cosmetics/cosmetics-labeling/shelf-life-and-expiration-dating-cosmetics. Accessed on Jan. 24, 2026.
Halla N, et al. "Cosmetics Preservation: A Review on Present Strategies." 27 Jun. 2028, Molecules, https://www.mdpi.com/1420-3049/23/7/1571. Accessed on Jan. 27, 2026.