https://newhair.com/wp-content/uploads/2018/06/nhi-medical-356px.png 0 0 William Rassman, M.D. & Jae Pak, M.D. https://newhair.com/wp-content/uploads/2018/06/nhi-medical-356px.png William Rassman, M.D. & Jae Pak, M.D.2019-05-21 04:30:432019-02-01 15:31:01Photo of young man showing 1 month change on finasteride but not real (from Reddit)
The hair is longer so the impact I believe we are seeing is due to longer hair. Hair grows about 1/2 inch per month so if the December photos has a 1/2 inch of length and the January photos (30 days later) and 1 inch of length, the hair mass will have doubled.