Hey there,
I have a friend who recently lost a huge amount of weight. About a year ago he was really fat, almost obese. He lost about 35kg of fat and went from 30+body fat to less than 10%. He has a problem with loose skin though, it is not noticeable when he stands, just when he sits, the loose skin hangs over his jeans. While he stands nice abs can be seen.
So I thought that maybe he should start using HGH? Because I've read that it really improves the skin and makes it look younger but would it make the loose skin tighten up?