Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worthless

This pore sucker just does not do what it says it does. It generates enough suction to make your skin red if you focus on one are for too long but it will not unplug a plug. Sure, it scrapes off some surface gunk -- that's it, though.I've had this "appliance" for almost a year. Work at it all you want, do all things some of the other reviewers suggest you do to get some results out of it--doesn't matter. Save your money.