I have to admit that my indents are a lot more noticeable since I've stopped using padding, and I have light brown circular marks around 3/4 of my breasts where the edge of the cups sit. But I'm not as young as your daughter and for some reason whenever I have something rubbing or putting pressure on my skin I tend to get brown marks. I had a pair of cowboy boots I used to wear several years ago that would rub the outside of my calves when I walked because I didn't wear socks tall enough to cover my legs at the top of my boots and where they rubbed and scratched my leg every time I wore them I had brown marks on both legs for at least a year after I stopped wearing them. It's been several years since I wore them and I still have a very small light mark on my left leg from them. I'm hoping that she does not have these issues, as not all users do, and I think the younger the user the more tolerable their bodies are depending on their health, skin condition, and muscle tone. The indentations are most likely caused by the pressure of the domes on the cartilage in the chest, whether they will be permanent as long as I've had them now who knows. But to be honest they really don't even bother me, but then again I'm married so I'm not concerned about how they appear to other people, and nobody has noticed, them that I know of. When they're really swelled up the indents seem to just make the cleavage more defined when wearing a bra. Braless, well, they look like they have circles around them, many of the other nooglers would be bothered by this, but considering my hubby is the only one who sees that much of them and he doesn't seem to be bothered by them they don't really bother me. For me, it is a small price to pay for hopefully someday having the breast size I desire without the cost and possible negative effects of surgery. For others that are more worried about their appearance when nude or provocatively attired they may be very bothersome. Unfortunately it's one of the few risks of this type of enlargement, but at least it's not as disfiguring or scarring as some of the surgeries gone wrong.