A user's 9 month progress using Finasteride, Derma Pen/Roller and Minoxidil to treat hair loss. Replies in the conversation include advice on topical application of Minoxidil and Dutasteride for regrowth and hair thickness.
Topical finasteride is almost as effective as oral finasteride with fewer side effects. Users are considering between oral and topical finasteride for hair loss treatment.
Tretinoin may help more minoxidil convert to its active form and could potentially increase its absorption, raising concerns about safety if too much enters the bloodstream. It's unclear if tretinoin affects finasteride absorption.
Finasteride is metabolized in the liver and excreted through urine and feces. Users humorously discuss its excretion, with one joking about it being expelled through ejaculation.