If you want permanent hair reduction you're MUCH better off going to try IPL. I tried IPL for about 6 or so months on my underarms to see pretty much no difference whatsoever. Then I went to a place that used a medical grade laser and saw a huge difference in 1 single treatment. After something like 5 or 6 treatments I was completely hair free and have remained that way for 3 or 4 years now. It's more expensive for each treatment, but you only need a couple to see a massive reduction so overall it works out way cheaper.
The big problem is that lots of salons falsely advertise their IPL treatments as laser hair reduction, which if course it's not. So you just have to check with them exactly what it is and what machine they are using - then do a bit of research before you book in to avoid disappointment. It's still personal preference of course but if you seriously thinking about hair reduction and especially if you have tried IPL to no avail, give medical grade laser a whirl instead. One of the best decisions I ever made!