It sheds anyway, it just takes a while to work its way out. I don't pluck, but in the second week after laser I do exfoliate more often than I would normally, because that seems to help. Gently towel-drying my face after I wash helps also. When I had my sample area done, I didn't notice much hair loss either, but the full face results were much clearer.
I noticed a significant difference after every treatment but I would echo what others here have said -- it took a good 6 sessions before I really started to see major patches where no hair at all was going back. Over the first 4-6 sessions, in spite of how much clearance is occurring, there will be lots of dormant hairs entering their active growth phases that also need to be taken care of. By my last session, which was my ninth, there were whole areas of my face that didn't even turn red at all, which I guess means there are no dark, coarse hairs left there at all to absorb the laser. Superficially my face looks clear now but I will keep going back until I'm absolutely sure the laser can't do any more.
I think it was slightly less painful last time, too, but the time before that I really struggled with the pain, which I think was a combination of my forgetting to take painkillers, the technician not using ice at all, and my skin being more sensitive now. I dread having the top lip done every time, but hopefully it won't be quite as bad from now on.