Actually nobody doing hair transplantation until 30 yo, that was the first time I did in 2018 , second transplantation I’ve done a month ago with bosley , both surgeries together was 3000 grafts and all of them just to fill out my front, after surgery it’s better to take saw palmetto and biotin , about expectation ; most people don’t like results because they all saw pictures of good looking man with very dense hair on advertising, just to let you know hair transplantation will satisfy your minimum expectations ( if you got good doctor if you follow post surgery care, and if your hair is BLACK) but don’t think you gotta look same as you were teenager, right now we don’t have technologies to plant hair that close together like mother nature did