I got a cheap one on Amazon. Doubt it even exists anymore. Took several months of treatments every few days. It at least got rid of the dark, thick ones on my legs, arms, and chest.

I also have an electrolysis machine, but it's extremely tedious and way more pain and I can only use it on places I can see well and use one hand to stretch the skin and one to hold the device. So it doesn't work well for arms or butt or back of the legs, etc. I'm also hesitant to use electrolysis on my face since the pain can be intense, especially around the nostrils and lips, and the unsightly welts are no fun. But it has helped a lot with leftovers on the legs, around the nipples, etc. And the insulated Ballet needles help a lot to reduce the pain.

For the face I did professional electrolysis for about 6 months, once a week. And that got a lot of it, but still have some thick, light colored hair that I need to get treated again some day.