After 3 uses on calves and underarms, I noticed a marked decrease in hair regrowth. My husband used to underarms and lower back and he could notice the same result after 3 sessions with a spacing of 2 weeks. By cons, here is not working on his white hair or too light. We must rely 1 hour to pluck two complete legs and underarms (maybe also because I do not yet have the knack).
I did not feel any sensation of pain or burning. It can be used both on the body than on the face except the eyebrows to avoid burning the retina. The light is intense enough, I did not dare to test it on my face.
Although the price is high, here always cheaper than several sessions with the beautician, I am delighted this product, only negative being electric, always be near a socket and a storage pouch would have been welcome.