Hey Cincy, I just completed my fourth laser treatment. So far, I haven't had any problems. Granted I have quite a bit of gray hair that the laser will not remove. I am BBC with terrible hair. I have found that I can shave the noggin in about half the time. Also, the growth time for the gray ones is about half of what it was. I only have to shave every other day now. My shadow is virtually gone now. Would I do it again? You bet!! Just wish I had discovered the sly life years ago. I say, It is worth it.