The affect is certainly improved once you are on AAs. But I saw effects after my first session, but it does take several days. Keep to the cycle as Karen said because you have to get the little sods as they sprout. I think I had 9 sessions and I'm clear on the face, boobs and tummy. My face cleared quite well so I used my session time for other areas. Upper lip has a few and I had a hard hit at them about 8 weeks ago. A few are returning to face being blasted to oblivion.
Do make sure you are being zapped by people who are into hair removal and not hair control. My laser place specialises in treating woman with polycystic fibrosis, they are not a 'beauty salon' as such they are into hair removal so they use the high power machine and they are all registered nurses trained to use them, rather than beauticians who may be using lower power machines to 'spot clean'.
Oh also ask the girls about skin care, my girls were so good on showing me good facial care I was totally taken aback, and my skin has improved heaps. And simple day care not the weird facial polymer cure every wrinkle crap.
Good Luck and happy follicle zapping
Cindy.