Is this site still working ? need some advice on my Seb Derm

About 2 years ago i began to get a really oily scalp it needed washing twice a day it was that bad, it also tingled a lot and was itchy, since then i have managed to get it under control using a caffiene shampoo and nizoral.

but all the hair i lost in the first months has never returned, my hair looks like it has been moth eaten.

what is the longest period of time it can take for the loss to regrow ? and is there anything i can do to help it regrow if it is struggling on its own ?

thanks any help would be appreciated

kevin