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I only had 3 treatments because it’s not an area that bothered me a lot. I just wanted a reduction so I wouldn’t have to shave as often and so that the remaining hairs were fine and didn’t leave black dots. I achieved that with 3 treatments - I’m probably at around 60-70% reduction. It’s a bit hard to quantify it exactly because during some hair cycles I have more hair than during others when there is almost nothing but sparse hairs. I will probably get a couple more treatments in the near future at Rome & Juliette now that I moved to NYC, but it’s not a priority for me right now since I rarely have to shave and this area doesn’t bother me at all.
I wouldn’t have them treat you anywhere where the hair is very fine, like the type on the back of your thighs.
Can you post a picture of your lower arms?