I have been very disappointed in this IPL device. I have light-medium skin, and dark hair. According to the chart this device should work well for my hair removal. I have followed all instructions to use this 3 days per week, on the same days consistently, at the highest tolerated intensity for at least 3 passes. I have been using this for 5 months in this manner; NOTHING. It also is often painful at the 6 and 7 intensity. If I had to guess, this device is not powerful enough to get to coarse hair follicles (although it is advertised to treat armpit and bikini and who does not have coarse hair here?). I tried to discuss this with customer service, but they just told me it may take longer for some. When I still did not have results, they told me I was outside of the return window. I just wish I could get my money back at this point.