Knowing how often to replace makeup and skincare helps you avoid eye irritation, ineffective sun protection, and products changed by age or contamination. This reusable checklist explains expiration dates, the period-after-opening symbol, practical replacement guidance by product type, and the signs that mean a product should leave your shelf sooner.
Overview
Beauty products do not all age in the same way. A liquid used around the eyes has a different safety profile from a dry powder, while sunscreen and treatment serums may become less useful even when they still look normal. The safest approach is to use three pieces of information together:
- The manufacturer’s expiration date or instructions. Treat a printed expiration date as the primary guidance, particularly for sunscreen and products with active ingredients.
- The opening date. Write the month and year on a small label or in your phone when you first use a product.
- The product’s condition. Changes in smell, color, texture, separation, packaging, or performance can justify earlier disposal.
Look for the period-after-opening (PAO) symbol: an open jar followed by a number and the letter M, such as 6M or 12M. It indicates the period the product is intended to remain suitable after opening when stored and used as directed. It does not replace a printed expiration date. If the product has both, follow whichever instruction requires earlier action.
These intervals are practical planning ranges, not guarantees. Formula, packaging, preservatives, frequency of use, storage, and contamination all matter. When in doubt, follow the brand’s instructions or discard the product rather than trying to extend its life.
Checklist by scenario
Use this table as a starting point, then check the label and PAO symbol for the specific product.
| Product | Practical replacement guidance | Discard sooner if you notice |
|---|---|---|
| Mascara | Plan a short replacement cycle after opening, commonly around three months unless the label says otherwise. | Dryness, clumps, a changed smell, irritation, or contact with an eye infection. |
| Liquid or gel eyeliner | Review regularly and follow the PAO symbol; eye-area liquids generally deserve a cautious schedule. | Skipping, drying, odor, separation, irritation, or a contaminated applicator. |
| Pencil eyeliner | Keep capped, sharpen regularly with a clean sharpener, and replace when the product or pencil becomes difficult to clean. | Persistent eye irritation, mold-like spots, an unusual smell, or a damaged tip or cap. |
| Foundation | Many opened liquid foundations are reviewed within roughly 12 to 18 months, but the PAO and formula instructions take priority. | Separation that does not remix, a sour odor, a noticeable color shift, or an irritated reaction. |
| Concealer | Check an opened liquid or cream concealer at least every 6 to 12 months and use the labeled PAO as the deciding guide. | Separation, drying, changed coverage, odor, or a dirty doe-foot applicator. |
| Lipstick and lip gloss | Review opened products around 12 to 24 months, depending on the formula and packaging. | Waxiness that smells rancid, beads of moisture, texture changes, or use during a cold sore or active lip infection. |
| Sunscreen | Use before the printed expiration date and follow storage instructions. Do not rely on appearance alone to judge whether protection remains dependable. | An expired date, prolonged heat exposure, separation, changed smell, or damaged packaging. |
| Vitamin C and other treatment serums | Follow the PAO and brand guidance closely. Opened formulas may be especially sensitive to light, air, and heat. | Darkening beyond the expected color, strong odor, separation, crystallization, or a new stinging reaction. |
| Moisturizer | Use the PAO symbol as the main guide and inspect open jars more carefully than pumps or tubes. | Water separation, odor changes, visible contamination, or a texture that no longer spreads normally. |
| Cleanser | Check the printed date and PAO; replace when the formula no longer lathers, rinses, or feels as intended. | Separation, odor change, a damaged pump, or a reaction that was not present before. |
| Powder blush, eyeshadow, and setting powder | Review periodically; dry powders often last longer than liquids when kept dry and clean. | A hard film, persistent odor, visible mold, dampness, or contamination from dirty brushes. |
For a broader routine audit, compare this list with your simple skincare routine and remove products you no longer use. If you are replacing complexion products, you may also want to revisit guidance on finding your foundation shade and undertone before buying another bottle.
What to double-check
Storage conditions
Heat, humidity, sunlight, and repeated exposure to air can shorten a product’s useful life. A steamy bathroom is not ideal for every formula, especially products that are sensitive to heat or moisture. Store items according to the packaging instructions, keep lids tightly closed, and avoid leaving cosmetics in a hot car or on a sunny windowsill.
Packaging and contamination
Pumps, tubes, and airless containers generally limit contact with fingers and air. Jars require more care: wash and dry your hands before use, avoid adding water to a formula, and do not share products that touch the eyes, lips, or broken skin. Clean makeup brushes and tools regularly, and do not put a dirty applicator back into a product.
Eye and skin symptoms
Stop using a product if it causes unexpected burning, swelling, itching, rash, or eye discomfort. If you have an eye infection, discard eye makeup used during the affected period rather than trying to save it. Seek professional medical advice for persistent or severe symptoms. Do not use a product simply because it still looks acceptable.
Label details
Check whether the package gives a use-by date, batch information, storage direction, or a PAO symbol. Some packaging prints these details on the outer box rather than the container. Keep the box until you have recorded the relevant information, particularly for sunscreen and treatment products.
Common mistakes
- Assuming unopened means permanent. Unopened products still have a manufacturer date and storage limits.
- Using smell as the only test. Some products can change in effectiveness without an obvious odor or texture change.
- Resetting the clock after cleaning the outside. Wiping a tube or palette does not reverse age or internal contamination.
- Sharing eye or lip products. Sharing increases the chance of transferring contamination between people.
- Keeping “just in case” products indefinitely. If you cannot identify when a product was opened and it is past its labeled guidance, replacement is the more cautious choice.
- Ignoring poor performance. A foundation that separates, a serum that oxidizes, or a sunscreen that has changed may no longer be worth using even before a visible problem becomes dramatic.
When to revisit
Make a shelf audit part of your routine rather than waiting for a major cleanout. Review opened makeup and skincare every few months, before seasonal changes, before travel, after an illness or eye infection, and whenever you reorganize your collection. A simple audit takes five steps:
- Gather products by category: eye makeup, complexion, lips, sunscreen, treatments, moisturizers, and cleansers.
- Record the opening month and photograph the PAO symbol or expiration date.
- Inspect color, smell, texture, packaging, and applicators.
- Separate products to keep, monitor, replace, or discard.
- Clean the storage area and tools before returning the products you kept.
Recheck manufacturer instructions when a formula, package, or product version changes. For sunscreen, confirm the printed expiration date before each warm-weather season; for eye products, be especially cautious after any eye irritation or infection. If you are rebuilding a collection, use product-comparison guidance thoughtfully—for example, when considering concealers for dark circles or facial sunscreen—and buy quantities you can reasonably use within the labeled period.
The goal is not to discard everything on a rigid schedule. It is to combine the label, the opening date, storage conditions, and the product’s actual condition so your beauty routine stays effective, comfortable, and easier to manage.
