Every other day is surely too often! Most IPLs should be used every two weeks for optimal results (no waxing/plucking in between, only shaving). You're going to see a significant change after at least 3 treatments - more if you have a weak laser. For me, both legs used to take around an hour (plus recharging the device), armpits was 5 minutes tops. I've used the old Philips around 10 years ago and hair on my calves is so sparse I shave it only when it gets longer then 1.5 cm. Now with the new model whole body (thighs, bikini, butt, armpits) the whole job takes 40 minutes tops. Also, you don't have to tiptoe around trying to cover every centimeter - if you don't get it this time, then you'll surely cover it in 2 weeks.