I credit this acne lamp with doing wonders for my skin. I have been using it for about a year, with a 4-5 month break inbetween when I went on antibiotics (bad idea - the pills didn't do anything - I should have stayed with this).
Whilst not the most user-friendly, especially if you're tired, using it for just 15 minutes a day has really made a difference to my skin. I started noticing results at around a month and best of all, there was no purging process. It was literally like all my active and dormant pimples dried up and never had the chance to see the light of day (excuse the pun).
For the last 4 months I have been using this in conjunction with Skinoren cream (see my review for that separately) and between these two I think I have finally found a regimen that works for me. I have struggled for years and tried so many antibiotics it's unreal.
I was one step away from roaccutane when I decided to throw caution to the wind and try this, having read a few reviews online. Luckily I found a second hand one on eBay for £50, although I would have paid much more as it is definitely worth it once you count up all the prescriptions, creams etc.
My doctor hadn't even heard of UV therapy when I broached the subject with him, but even he is impressed with my progress. I still get hormonal pimples but these are tiny and generally go away in a few days. Nothing like the big, painful lumps I used to have for weeks at a time.
I hope this review is helpful and if you're um-ing and ah-ing over whether or not to buy one, I would say go for it. Worse case scenario it doesn't work but at least you don't have any physical side effects (like BP, Retin A et al can do) and can easily sell it on again at a fair price.