I've had it done. 6 treatments removed about half the hair: I can now epilate my underarms and bikini line with confidence (and lack of blood/screaming/pain). The same results for my legs have taken 10 years of waxing, plucking and epilation to achieve. Hasn't changed my mustache too much though, which was a pity. Had it done 2yr-18m ago.

I would recommend it, it's quicker than other hair removal treatments and makes my epilating last longer (I do my underarms once a month, my legs once a week). No side-effects. But not completely effective.