I can't think of any real reason you have to wash your hair everyday, but it's pretty nasty if you don't IMO. But then again I have oily skin so I need to.
Regarding DHT, I think that Propecia does much more than any topical shampoo which only stays on for a few minutes, but removing it topically can't hurt I suppose. I just don't expect much from it. I will say that Revita was highly recommended for other reasons besides DHT removal.
If you think washing your hair makes it fall out faster, it doesn't.
Everyone reacts differently to meds so there is no real cutoff regarding when its time to give up hope. I also think using minox with Prop makes sense but its your call.
Go shave it and be done with it for a while... it was a big relief to me.
