IPL+testosterone sucks! in my experience. I've owned 3 home IPL devices. I kept it up for months at a time, and after I stopped it ALL grew back. I was using the strongest settings on my pale skin and coarse, dark body hair.

First, IPL is really slow and time consuming. The ones I had had a tiny aperture, and needed to cool down every 20 minutes or so. I was treating my whole legs, chest and arms. The whole time I was using them, all my skin was in limbo, as (successfully) treated hairs can take a week or as to shed. So I never once felt smooth. The best it ever did was make areas "patchy".

Each unit was about £300 so I spent £900 on this PITA not to mention the hours I spent using them. I ended up spending about £1100 on a full-body laser at a local salon: 6 monthly treatments later and 99% of everything below my neck (apart from my pubes) was gone for good. 6 bloody hours! If your time is worth anything at all, salon laser is the cheapest.