Sunscreen Expiry Guide
Check printed dates, PAO markings, storage damage and replacement signs without relying on a batch code alone.
3 lecture minimale · juillet 2026mis à jour
Use the printed date first
Sunscreen performance matters directly to UV protection. Follow an explicit expiry date and any storage directions on the container. If there is no expiry date, follow the PAO symbol after opening and the manufacturer's local guidance.
A batch decoder may estimate manufacture age, but it cannot measure current SPF performance or override a printed expiry date.
Heat and contamination matter
Protect sunscreen from prolonged heat and direct sun. A bottle left repeatedly in a hot car or on a beach can deteriorate before its printed date, depending on the formula and packaging.
Keep the opening clean and the cap closed. Do not mix old and new product or dilute it.
When to replace it
Replace sunscreen after its expiry or PAO limit, and sooner if the package is damaged, the formula no longer remixes as directed, or its colour, smell or texture changes substantially.
When condition or age is uncertain, use a replacement rather than treating a successful code decode as reassurance.
Apply enough and reapply
Freshness is only one part of protection. Apply the amount directed on the label and reapply as instructed, especially after swimming, sweating or towelling.
Check current public-health or product guidance for your location and activity.
FAQ
Can a batch code confirm that sunscreen still works?
No. It may estimate age but cannot test SPF performance, storage damage or contamination.
Can I use sunscreen after the printed expiry date?
Replace it; the printed date is more authoritative than a decoded estimate.