I am 23 years old and I am not able to grow a beard.
I have few thin facial hairs at moustache area and sideburns.
I am not sure about low
testosterone levels because I had zinc deficiency around 2 years ago, for which I took a zinc tonic for around a month.
Please suggest me a treatment for growing a proper beard. Should I take some medicine or tonic or some kind of lotion like beard oil would be helpful.