First of anticipating, I have the unit for about 2 months and am now really excited which results can be seen already! I have very dark body hair, to the hair very thick (= "bristly"). That makes me unfortunately quite a problem to remove them in conventional ways. Especially in the underarm and bikini area, I have the problem that the hairs are still visible after shaving as a black dot, also form after a half day small red pimples. The epilation (ouch, ouch !!!) works a little better, but it happens often, unfortunately, that the hair grow, that just looks too saublöd in the summer and still hurts. Waxing and sugaring me is too expensive in the long run and also ouch, ouch ... last hope so, permanent hair removal. I have very fair skin and dark skin. So I did as advised, with the lowest level "losgeblitzt" and quickly found that the highest level, so level 5, also works very well. I underarms and bikini area thoroughly shaved before each treatment and treats both areas with the stage 5 about every 2 weeks. The manufacturer recommends to pay attention to birthmarks, etc, as I have just around it "flashed". The skin has been through super, so no burns or other reactions. And what can I say: My shoulders are almost completely free of hair, there are per armpit hair because maybe 3-5. The bikini area also looks almost perfect. The skin is completely smooth, no black spots, no ingrown hair, amazing! The cost was also very manageable, per armpit 2-3 min, bikini area for 5 minutes. Since it worked so great, I will now take the rest in attack and also treat legs, which certainly takes a little longer, but at the result, I like doing it. I would recommend the device only !!!