Have you ever transplanted grafts along a non balding person’s hairline not to lower, but to thicken the hairline so that they could grow a fuller fringe if they had fairly fine hair?
In dealing with hairlines, transplanting a normal hairline just to thicken it is not advisable, as the transplant could damage the existing hair. I have fixed defective looking hairlines on male actors and models who need perfect frontal hairlines for their careers, so I have worked to keep their juvenile hairline intact.
For women who have normally high, non-balding hairlines, these can also be addressed with either frontal hair transplants to bring the hairline down or hairline lowering surgery. Many women have these procedures done.