Unsure whether an old mascara, serum, shampoo, or fragrance is still usable? This beauty product expiration guide explains how to read the PAO symbol, estimate a product’s usable life, spot changes that warrant disposal, and complete a practical bathroom-shelf cleanout without relying on guesswork.
Overview
Beauty products do not all expire on the same schedule. An unopened product may remain usable until the date printed on its packaging, while an opened product can change sooner because it has been exposed to air, fingers, water, heat, and bacteria. The formula, packaging, storage conditions, and frequency of use all matter.
Start with the product’s packaging rather than a generic online rule. Look for an expiration date, a batch or lot code, or the open-jar symbol known as the period-after-opening, or PAO, symbol. It looks like a small jar with a number followed by the letter “M,” such as “6M” or “12M.” This indicates the typical number of months the product is intended to remain suitable after opening. Write the opening date on a removable label or in a notes app so the PAO period is easy to track.
A PAO symbol is a useful reference, not permission to keep a product that has visibly deteriorated. When the product smells different, separates permanently, changes color or texture, develops mold, or causes unexpected irritation, stop using it. If the packaging gives a specific expiration date, follow that date. When the date or opening history is unclear and the product is intended for the eyes, broken skin, or sun protection, replacing it is the more cautious choice.
For routine-building ideas, see How to Build a Skincare Routine by Skin Type. If you are sorting products for acne-prone skin, Top 10 Skincare Products for Acne-Prone Skin can help you compare replacements by formula and ingredient type.
Checklist by scenario
Use these ranges as practical review points, then confirm the product label and manufacturer’s directions when available. “After opening” means the clock begins when the seal is first broken or the product is first used.
| Product category | Typical review point after opening | Replace sooner if you notice |
|---|---|---|
| Mascara and liquid eyeliner | About 3 to 6 months; check the label | Dryness, clumping, altered smell, or eye irritation |
| Liquid foundation, concealer, and cream makeup | About 6 to 12 months | Separation that does not remix, odor, pilling, or a changed shade |
| Powder blush, bronzer, eyeshadow, and setting powder | Often longer than liquids when kept dry and clean | A hard film, persistent odor, moisture, or visible contamination |
| Lipstick, lip gloss, and lip balm | Review regularly; often around 12 months or according to the label | Rancid smell, sweating, texture change, or recent illness exposure |
| Serums, moisturizers, and eye creams | Follow the PAO; commonly about 6 to 12 months | Color, scent, consistency, or skin response changes |
| Cleanser and body wash | Follow the PAO and printed date | Watery separation, unusual odor, or a compromised pump or cap |
| Sunscreen | Use the printed expiration date and storage guidance | It is expired, has been overheated, or has changed in smell or texture |
| Shampoo, conditioner, and styling products | Follow the PAO; review older products before the next season | Separation, sour smell, leaking packaging, or reduced performance |
| Fragrance | Can last for years when stored well, but inspect regularly | A noticeably sour, sharp, or stale odor, darkening, or sediment |
| Makeup sponges and reusable tools | Clean after use and replace when worn or difficult to clean | Tears, permanent staining, odor, mildew, or rough surfaces |
Makeup shelf checklist
- Remove mascara and liquid eye products whose opening date you cannot remember.
- Inspect cream products for separation, odor, and texture changes.
- Clean powder compacts and discard products exposed to moisture or visible contamination.
- Wash or replace sponges and sanitize washable brushes according to their material and care instructions.
- Do not add water, oil, or saliva to revive dried-out makeup; this can change the formula and introduce contamination.
Skincare and sun-care checklist
- Give priority to products used around the eyes, on irritated skin, or on active blemishes.
- Check whether pumps, droppers, and jars still close securely.
- Keep sunscreen only if it is within its printed date and has been stored as directed. For sunscreen shopping guidance, visit Best Sunscreens for Face: Top 10 Formulas by Skin Type and Finish.
- Patch-test a replacement if your skin is reactive, especially after switching to a different formula.
What to double-check
Storage conditions
A cool, dry drawer is generally a better home for many products than a steamy bathroom windowsill. Keep lids closed, protect formulas from direct sunlight, and avoid leaving products in a hot car or beside a radiator. Heat and repeated humidity can affect texture, packaging, and preservation.
Packaging design
Airless pumps and sealed tubes usually expose a formula to less air and handling than open jars, but packaging does not make a product permanent. A jar requires clean, dry hands or a clean spatula. Droppers should not touch the skin, and pump openings should be wiped if product builds up around them.
Product-specific risks
Eye products deserve a shorter tolerance for uncertainty because they are used close to a sensitive area. Sunscreen must be judged by its printed expiration date and storage history rather than a general makeup timeline. Products used on broken, freshly exfoliated, or irritated skin should be discarded at the first sign of an unusual reaction. If burning, swelling, a rash, or persistent irritation occurs, stop using the product and seek medical advice when appropriate.
Formula changes
A familiar product may be reformulated or repackaged. If you are replacing an old favorite, compare the current ingredient list and directions rather than assuming the new version is identical. For makeup replacements, How to Find Your Foundation Shade and Undertone Online and In Store can help when packaging or shade names have changed.
Common mistakes
- Relying on smell alone: A product can be unsuitable before its odor changes, so combine the smell check with the PAO, date, appearance, and storage history.
- Confusing unopened and opened shelf life: Opening a sealed product starts a different timeline. Record the date immediately.
- Sharing eye or lip products: Sharing increases exposure to contaminants. Keep personal products personal, especially mascara, eyeliner, lip products, and sponges.
- Storing everything in the shower: Constant heat and moisture can shorten the practical life of some formulas and damage labels that contain important dates.
- Keeping products because they are expensive: Luxury packaging does not remove the need to follow dates and condition checks. The same applies when comparing luxury and drugstore beauty.
- Ignoring tools: Brushes, curlers, tweezers, facial devices, and sponges also need cleaning, drying, inspection, and replacement. See Top 10 Beauty Tools and Devices for buying considerations.
When to revisit
Make this check part of a seasonal bathroom cleanout, before travel, after moving products into a new storage area, or whenever you open several new items at once. A simple quarterly review is enough for many shelves: photograph or record the expiration date, mark the opening month, clean the storage area, and place products that need replacing on a short shopping list.
Revisit sooner after unusually hot weather, a plumbing or water leak, illness affecting shared products, or a noticeable change in a formula. Also review the shelf when a brand changes packaging, publishes new product directions, or reformulates a favorite. For hair routines, product buildup and performance changes can be easier to understand after checking your hair’s needs; the Hair Porosity Test and Routine Guide offers a useful comparison framework.
Five-minute action plan: Choose one drawer or shelf, remove anything past its printed date, set aside products beyond their PAO, inspect the remaining formulas, wash reusable tools, and label every newly opened item. When in doubt—particularly with eye makeup, sunscreen, or a product that has changed—replace it rather than trying to extend its life.
