Does Testosterone Help In Growth Of Facial Hair?

Hi, I m Patrick, 34, bodybuilder. I had always wanted to grow a beard, but I am much hairless on the face, I usually need to shave once a week to look clean shaved. I let it grow for a month, there is some hair on the jaw line, chin and mustache, but quite nothing on the jaws. I never really shaved, is shaving my face twice a day will help growing a beard after a while? I also always struggled with fat lost, had a hard time to grow my muscles also. I planned to inject myself 2cc of testosterone/week for 10 weeks to build more muscle, can it help me to grow some facial hair, and is it enough testosterone? thank you very much