I Wanna Only Go for One Session of Laser Hair Removal?

I'm not sure how much, but with a good technician you can certainly see possibly 20% less hair after 1 treatment, b/c you *will* have at that time many hairs in the anagen phase. That being said, definitely do stick to lower arms only imo, once in a while people treated on the uppers are get increased hair growth induced by laser on the upper arms. The saprano isn't the most awesome laser, so get the best tech they have. I don't know however if this will give you a mix of coarse and fine hairs b/c some hairs even though treated, come back finer and are not removed.