I have got lots of bump and blackheads on chin and nose. Facials and extraction work to a point and I have ordered some stuff with glycolic acid but have also come across this as a possible solution. I guess as it cleans deeply every day it helps in some way... I don't wear makeup everyday but I do live in a dirty stink hole of a city.
I did a thread search on here and there are a few people who recommend them but I wondered if anyone is still using and whether it really is an incvestment.
I also read that the QVC one is OK too ( and worth trying with 30 day money back thingy) but perhaps not so good as the clarisonic.