Review (4/5): It works...
While the thing does work, it is annoying to use.
You have to keep contact with the metal plate on the base, as well as on the pen. On top of that, every tip I got was bent to hell. Because of that, it's more difficult to get it going correctly.
The tweezers are completely useless. the tips are rounded way too much, so it wont grab the hairs very well.
Also, uses 9volt battery, so good luck getting rechargeable for it, to cut costs. It's still cheaper than going to a pro, but it takes a lot of time and patience.
If you have both, plus a reasonably high pain tolerance, this is a great product.. with an upgrade or two.