I'm 18, and the bottom of my penis has a line of darker (and seemingly thinner) skin running from my head to scrotum. The skin is less noticeable when erect, but still it's a large scar and a large dark line that's very noticeable when flacid. I can't remember how long it's been there, though I think it's probably been developing since I started masturbating (around 12).
Basically, it's damaged skin and I fear it's at a point where any chance of healing is long gone. It's really been there for as long as I can remember. I'm not sure, but I feel like it's only gotten worse; I worry that each time I get an erection it stretches it, or rather, it is already too stretched and ruined to ever go away.
I always hoped it would dissappear, but nope. Is there anything that can be applied to it, even to make it slightly less noticeable? I figure it will have that shape/mark forever now, but I'd like to try anything possible.
I've also searched alot and can't find anybody in the same boat, and everybody claims penis skin damage heals quickly which this certainly hasn't. I'm certain it's not an std, because it has existed for a long time.