I love my rotary epilator! I use it on my upper legs which aren’t coarse and dark enough to laser, too expensive to electrolysis, too coarse to wax at home, and I hate shaving. I have noticed a reduction in growth on my upper legs. Hair is lighter, thinner and sparser, but doesn’t grow back and slower. I get some ingrown hairs around my bikini line, but not that bad, and not enough to bother me.
I would not use it on my face - when I tried, I had increased hair growth.