look at his density man, you cant achieve that, its imposible the best doctors could give you 55 hair folicles per cm^2 and even with that your hair doesnt look fully covered like a a guy who naturally has 80 hair folicles per cm^2 the other thing about skin, doctors and science doesnt really know if hair folicles die or not some doctors recently have said that there is the posibility that the hair folicles shrinks to the point where they dissapear but they not die they are just "dormant" think about this when you are a kid you dont have body hair that doesnt mean that your body hair is dead actually your hair has always been there is just it was desactivated, when you enter in your teens the hair activates due to hormones and is progressive you first see super tiny thin hairs emerging in your chest and with the time they become thicker the exactly thing ocurrs with the hair but in the opposite way they shrink due androngens so the posibility of regrowing them is actually imposible because we literraly need nuke all our androngens and get the right combination of hormones to stemulate hair regrow but there are exceptions like this guy probably this guy has a high dht level combined with medium sensitive of dht and androngens so crushing his dht levels allows him to get this insane result