Andrew Huberman· PhD
0.5mg to one mg per day of oral finasteride seems to be the best starting place. For topical finasteride. It's going to be that one ml of 0.25% that we talked about earlier, but that's taken only one time per week, and you can fully expect that right after the application you will have higher levels of finasteride in your bloodstream, and therefore lower levels of DHT and that will alter across the week.