Expired peroxide breaks down into oxygen and water – it won’t whiten, and it might irritate your gums.
Still stuck? Share a photo of the syringe tip in the comments (if allowed), or ask your dentist for a replacement. Your smile is worth the safe route. Have you successfully unblocked a Zoom syringe before? Drop your tips below! 👇 unblock zoom whitening
How to Unblock Zoom Whitening (And Get That Brighter Smile Back) Expired peroxide breaks down into oxygen and water