Sadly don’t feel that my teeth are any whiter. Felt like immediately following the session they looked brighter but within two days, had settled back to normal. Wouldn’t recommend.
This was my first time having my teeth whitened- and it sounded really really long and quite boring (1 hour lying still!) but it was quite nice because the technician said I could listen to my own music, so it was quite relaxing in the end. The end result was great, I’ve gone from shade 18 (v yellow) to shade 6 (I think?) so all in all quite pleased.