Here is my theorie why this lotion could work and why brotzu is right about his claim that microcirculation is important for hairloss.
So let's assume that dht really has a bad effect on microcirculation. Over the years the blood vessels which provide the hair follicles with the necessary nutrients would become smaller and smaller and over time the vessels lose the ability to provide the hair follicle with enough nutrients and the amount of nutirents reaching the hair follicle decrease. It's all a "slow" process and that's why you don't instantly lose your hair, they just get thinner over time because the vessels also get thinner and are damaged and can't provide the hair follicle with enough substances to grow a strong hair. This could also explain why follicles may die, because they don't have a blood vessel anymore which supply them because the vessel reaching the hair follicle died aswell.
Furthermore it could explain why minoxidil has a positive effect on hair loss, but not in long terms. Minoxidil does improve the blood stream reaching the hair follicles but they don't repair the vessels. Short term you will have more blood with nutrients which provide your hair but because the vessels become smaller and smaller due to dht, minoxidil can't stop hair loss. Also finasterid is no cure because it just slows down the damaging of the vessels but again doesn't repair the vessels.
Even l'oreal found in a study that hair loss is cause by too less oxygen reaching the hair follicle. Since the blood transports oxygen to the hair follicle, the undersupply of oxygen could be explained by damaged blood vessels.
Brotzu said that the lotion (expecially pge1) has the ability to slowly repair your vessels and over the month/years they would become more and more able to produce a strong hair again and can provide your hair with enough nutrients and you will regrowth a good amount of hair. Maybe not all because I don't know if the lotion can repair very damaged vessels or even force them to reproduce new vessels which reach some dormant hair follicles with no blood supply. But younger people and people with a shorter history of hair loss could have a signifikant regrowth because their microcirculation isn't damaged enough and could be repaired by this lotion. Also younger people tend to repair damage to their body faster than older men.
What do you guys think? I think (please correct me if i'm wrong) brotzu was one of the first doctors who said that microcirculation is important in hair loss. All the theorys i heard where about dht damaging the hair follicles but maybe they damage the blood vessel reaching the hair follicle which then damage them.
Sorry for my english it's saturday night and i had some beer and english is not my nativ language