To quote Will Hartfield,

“men who suffer from male pattern baldness don’t have particularly high levels of DHT. The problem is that our hair follicles are more sensitive to DHT and the hair follicle miniaturisation that DHT causes. So although lowering your DHT levels will help, there are more effective ways to stop hair loss, by reducing the sensitivity of the hair follicle to the DHT."

Here’s the link to a study of note: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4314881/

They use a 0.1% solution which works out as 1 mg dosed twice daily so 2mg per day.

Improve diet and increase alkaline foods such as vegetables, nuts and seeds, fruits, remove gluten.

Having followed those steps, read this article: https://www.hairlossrevolution.com/clean-scalp/