The Period After Opening (PAO) symbol — an open jar with a number like 6M, 12M, 24M — tells you how many months a product remains safe and effective after you first open it. This tool helps you track every product in your routine.
This tool is for personal reference only. Always follow the manufacturer's guidance on the packaging.
Add a Product to Track
Choose the number shown on the PAO symbol (open jar icon) on your product.
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Start tracking your skincare and makeup. Add your first product above to see expiry warnings and progress.
Quick Tips
- Check the bottom, back, or side of the packaging for the open-jar PAO symbol.
- Mascara, liquid eyeliner, and eye products usually have the shortest PAO (3-6 months) because they are prone to bacteria.
- Perfumes and alcohol-based products generally last longer (24-36+ months).
- When in doubt, if the texture, smell, or color has changed significantly, discard the product.
Suggested PAO values are common industry averages. Always prioritize the number printed on your specific product.
Common PAO Values by Product Type
Use this reference table as a general guide. Always check the actual PAO symbol printed on your specific product.
| Product Type | Recommended PAO | Important Notes |
|---|---|---|
| Mascara | 3–6 months | Replace sooner if it smells off or becomes clumpy. High risk of eye infections. |
| Liquid Eyeliner / Brow Products | 3–6 months | Similar contamination risk to mascara. Keep caps clean. |
| Eye Cream | 6 months | Delicate area — shorter PAO recommended for safety. |
| Foundation (Liquid or Cream) | 6–12 months | Pump packaging usually lasts longer than jar packaging. |
| Moisturizer (Jar / Cream) | 6–9 months | Fingers touching the product increases contamination risk. |
| Serum / Ampoule | 12 months | Many modern serums with airless pumps last full 12 months. |
| Sunscreen | 12 months | Heat and sunlight can degrade filters faster. Replace yearly even if within PAO. |
| Lipstick (Bullet) | 12–24 months | Very stable formula. Wipe the bullet clean after each use. |
| Perfume / Fragrance | 24–36 months | Store in a cool, dark place. Color or scent change = time to replace. |
These are industry averages. Individual formulas, preservatives, and packaging can affect actual shelf life after opening.