Don't waste your money.
Hair does NOT conduct electricity, nor will radio waves travel down the hair shaft! We have discussed this scam here many times. They say money back guarantee, but you won't get a cent back.
Radio Frequency hair removal can only work with a probe/needle inserted into the hair shaft, and since that is the type of hair removal that requires the MOST SKILL to perform correctly, it is NOT something that home users with NO EXPERIENCE should be trying to do.
_________________________
Setting a goal is not the main thing. It is deciding how you will go about achieving it and staying with that plan. --- Tom Landry