Scar on moustache, will hair regrow on this place?

My name is Satish , I met an accident 2 years back, due to this I lost my hair on moustache. I never taken any treatment for this, now I am looking for hair on that place, it looking very same less to me, because of this I am not going outside, could you please suggest the best option to grow the hair on scar. It is a deep cut on upper lip in to out. And also please suggest the best clinic.Thank you so much.