I splurged on a Ulike Air 10 home IPL last month using the paypal monthly payment. It's the only one so far with the 'ice' effect that cools the skin while pulsing and has a studio setting.
The instructions are to shave and treat 3x a week, every other day, for 4 weeks. Then bi-monthly to monthly for another six months.
So I finished up the initial 4 week treatment and it did wonders for my arms and legs, there is very minimum hair/stubble growth and my bi-weekly treatments start on Monday. So, for arms and legs, - wow. I'm very satisfied.
For some reason chest, abdomen, and pubic hair remain stubborn. Genitalia is counter-indicated but I did it anyway. The problem is that the device is calibrated to detect depth in the skin and when it goes on very soft skin, like the scotum, it won't pulse. You have to really strecth the skin tight to get the device to register and pulse. But the area between the thigh and scotum, the pubic/bikini area/line, works well but for me, at least, needs a bit more of the intensive schedule.
Of course the HRT should also take care of some chest/abdomen hair as far as I understand (two weeks, girls!!!! Two weeks!!!) but I thought that I would give it a head start and feel like I was doing something to counteract the dysphoria of man-hair.
But yea, shaving and home IPL, arms and legs are growing back very, very slowly if at all (can't tell that yet, but it is not advertised as permanent).