The best laser hair removal will yield 70% total removal after a series, and the remaining hairs will be lighter, shorter, and thinner. Throughout our lifetimes we will also have new follicles develop, which is why any laser hair removal will always require maintenance treatments. I would NOT recommend laser hair removal to the eyebrow unless you want patchy brows. Any hairs that respond are permanently gone, and will remain that way forever. "This answer has been solicited without seeing this patient andcannot be held as true medical advice, but only opinion. Seek in-persontreatment with a trained medical professional for appropriate care."