How can i increase facial growth? i have a thick mustache and decent sideburns, how can i grow it all out. i want a full goatee or chinstrap

Rogaine (minoxidil) can help: Rogaine (minoxidil) 5% available over the counter would work well. Apply it twice daily to the area where you want to see more hair growth and you should see results within a few weeks.

Facial hair: This may be difficult. Yes facial hair is a secondary sex characteristic may want to have testosterone checked. Pattern and distribution not identical in all men.