I bought this for my daughter. She has dark brown hair and fair skin. She is using it for her underarms and bikini line. So far so good. We have only used it twice. Once every 2 weeks and in one underarm the hair really seems to be growing slower and when she shaves it there is no stubble. The other underarm still remains to be seen. Or may just take a little longer, the same with the bikini line. But if it slows hair growth and she has to shave less often it will be worth it.