Cosmetic expiry dates and periods after opening (PAO) are both important indicators of product safety and effectiveness, but they serve different purposes. The expiry date is the final date a product should be used, while the PAO indicates how long it remains safe after opening. Always check both to ensure your skincare remains effective and safe to use.
Understanding Cosmetic Expiry Dates
Cosmetic expiry dates are printed on the packaging and indicate the last date a product should be used. This is based on the product’s formulation and stability. Using products past their expiry date can lead to reduced effectiveness or potential irritation.
How to Find the Expiry Date
Look for a small icon or text on the packaging, often marked as "EXP" followed by a date. If unsure, contact the manufacturer for clarification.
Period After Opening (PAO)
The PAO is represented by an open jar icon with a number (e.g., 6M, 12M), indicating how many months the product remains safe after opening. This is crucial because exposure to air, light, and bacteria can degrade the product over time.
How to Track PAO
Write the opening date on the product label with a permanent marker. This helps you keep track of when it’s time to replace it.
Practical Takeaway
To ensure your skincare remains safe and effective:
- Always check the expiry date before purchasing.
- Note the PAO symbol and mark the opening date.
- Store products in a cool, dry place away from direct sunlight.
- Discard any product that smells off, changes texture, or causes irritation.
For more details on cosmetic safety, refer to this guide by the FDA.