Read My Lips
New member
I used this MX whitening stuff that's like a paint brush that you brush on the whitening stuff.. you're meant to leave it on 30-60secs but it says if you want to you can leave it on longer, i left it on for like 1 and a half minutes or something... and took it off to find white spots on my teeth?! Like in the centre of 3 of my teeth not all of them?!?! HELP!!! I'm so worried!!!