How long does it take? June 29, 2022 14:45 Updated Depending on the service you select, our whitening treatments can take anywhere from 30 minutes to 1 hour. Related articles How white will my teeth get? Who’s administering the treatment? What is in the whitening treatment? Where can I find the Teeth Whitening Spa once I’m in-store? Is a dentist present? Comments 0 comments Please sign in to leave a comment.