Young Transplant

[FearTheLoss]

Hello all, I'm just planning for the future what I would do if I get a HT.. When is the youngest age appropriate for a hair transplant...and If I were say, 26 and I just got my hairline touched up (FUE) and lost more hair later and got a few more hair transplants down the road, if my hairloss progressed, would it be a mess? (assuming no new medicines come out)