I guess it's good if you are already have a receding hairline. I have been buzzing my hair down to 2 millimeters for over 5 years now.
Otherwise, I think these compounds make you look "younger". I use the term in quotes because I am not sure that it's the right word. But when I was on Osta, I had girl friends comment on how my skin looked young and healthy. Even when I was sleeping 6 hour nights, I didn't wake up with bags under my eyes. Nothing to do with balding, but just saying.