They do, however I long long time ago I worked them out and have been using them ever since, I have shaved or waxed (my legs or arm/underarms) in more than 10 years.
Heres the steps;
* Go and get waxed
* from the second day use the epilator on your body for 5 minutes, quickly going over every part you had waxed, you'll start to pick up the odd hair that was missed in the waxing
* after a few weeks, you'll pick up a few hairs each time.
* Do this once every 2 days until you want to give it up.
Now, I haven't had a hair on my legs or arms/underarms that I could see in so many years its not funny. I do my arms because the only thing HRT didn't help with me was I have dark, but thin hair on my arms.
Because I'm plucking at the roots, you can't see any really growing at all and one of my friends commented when I was in bali that I have the smoothest legs shes ever seen and wanted to know my trick.