Does it matter how far away the treatments are from each other?

As long as you eventually do the full 6 treatments? I can’t do all 6-8 underarm laser treatments in 1 year. It may take me 3 years, will this jeapordize my results?

That should not jeopardize your results. I do not get treatments during the summer because my tan gets too dark and my practitioner says it won’t make the treatments less effective to skip them during the summer.

What you don’t want to do is space the treatments too close together because you want them to coincide with the hair growth cycles.