What is the optimal dose of finasteride for hair loss?

Finasteride pharmacokinetics:
https://pubmed.ncbi.nlm.nih.gov/8846625/

Finasteride and scalp DHT:
https://pubmed.ncbi.nlm.nih.gov/10495374/

Finasteride dose ranging study:
https://pubmed.ncbi.nlm.nih.gov/10495375/

finasteridehair lossandrogenic alopecia