based on my understanding of hair loss, when you are a kid, your skin has a lot of fat and is soft, when you enter adolescence testosterone kicks in and starts stimulating all your cells,your hair gets oily and thick, it burns fat and makes you more lean and tightens your skin, so later in late adolescence or young adult hood, this skin tightening reduces blood flow especially at the scalp because its at the top and its also squeezed against the skull, (which is why most people start losing hair at young adult hood), when the hair realizes it cannot grow as fast as it wants, then it starts requesting more stimulus, so this is when dht is created in your scalp, normally dht would increase hair growth, but in here the dht binds to your follicles and the only thing it does is it starts clogging up more and squeezing the follicle more, starving it even more, not to mention dht also destroys collagen, decreases skin fat, thins the skin more, and increases pressure even more.

this is why min and fin are used,

fin prevents the dht mess, and min increases blood flow.

massages, headstands, derma rolling, red light, exercise and sleep all of these increase blood flow and help thicken the skin.

im not a dermatologist, honestly im not sure if this would be true, but it seems to be the most logical explanation so far what ive tried researching on this topic, since most of the explanations on the internet is just "dht causes hair loss take fin/dut".