Actually works!
I recieved mines on 27/12/24 and had pretty low expectations tbh but am delighted with the results after first use, I have very sensitive teeth and was a bit worried it would feel horrible but was totally fine, it sounded worse than it felt! Removed most of the gross bits off back of my bottom teeth and will continue to use to keep on top of it! Also fast delivery - ordered 21st Dec and recieved 27th Dec 👍🏻