From the little bit I read from Google, it seemed like bpc needed to be injected sub-q into the scalp to have an effect. Not sure how great of an effect though. TB doesn't have to be injected locally for anything from what I understand, and not sure if it would affect hair growth.
I used both no hair regrowth but I didn't inject in my scalp.
The thing I read, they used alcohol to mix it, to make it a topical rub.
That doesn't sound right... But you may be able to find info on just googling. Minoxidil/Rogaine seems to be your best best unless you go hair implant route. I've started to get a bald spot over the last couple years thanks to genetics and most recently some additional supplementation. Kind of accepted it though.
I have heard about finestride for hair regrowth.
If I remember correctly, I believe some people experienced hair regrowth on deca. But different people seem to experience different results with different compounds. I've even read a few people say they have had regrowth while on test.
Oops I never heard of it. However, this might be great for those who are experiencing hair loss or hair thinning. This could be the answer to their problem! I hope it works really great though.