I first started using Fin over 3 years ago because of crown thinning and temple recession. I had a pretty pronounced bald spot on the crown and general thinning in the area.
After 3 months the crown started filling in nicely and after 6 months all I had was a little thin spot on the crown (hardly noticeable).
My temples have stayed as they are and the crown has too ...
I rarely come on this forum anymore because all in all I'm happy with what Fin did for me ...
Good luck guys .. it can work for you too
P.S Only had some very minor Fin sides which went away after the second week
Fin was the best thing I ever did for my hair
P.P.S I am now 40 so it can work for older guys too ...