Custom whitening trays typically last 2–5 years or longer with proper care. Replace them if they become cracked, warped, loose, or no longer fit after dental work or tooth movement.

To extend their lifespan:

• Rinse with cool water and gently brush after use.
• Let them air-dry before storing them in their case.
• Never use hot water, which can distort the tray material.

The trays are reusable, but the whitening gel has a separate expiration date. Philips confirms its whitening trays are designed for repeated use and should be cleaned and properly stored.

Yes. As long as your whitening trays still fit properly and are not damaged, you can purchase whitening-gel refills without ordering new trays. Always follow the gel’s instructions and recommended wear time.

No. Do not eat, drink, smoke, or vape while wearing your whitening trays. These activities can interfere with the whitening process, damage or stain the trays, and increase the chance of swallowing whitening gel. Remove the trays first and rinse your mouth afterward.

Yes. Gently brush and floss before inserting your whitening trays. This removes plaque and food debris, allowing the gel to contact your teeth more evenly. Avoid aggressive brushing that could irritate your gums, and follow the whitening-gel instructions.