The Moustache is one of crucial part of man face. Even, for some people, beard and mustache are more important than regular hairs. Beard or mustache lack or sparseness can be really annoying for some people and on the contrary of hair loss moustache loss or lack are not natural at all.
The main reasons of moustache loss are triode or systemic diseases, burns, tattoos, infections. Due to those diseases or causes the beard can completely lost or get thinner and damaged partially. The moustache transplant is similar to hair transplant in many ways. Due to characteristic shape of moustache, it might differ from hair transplant. You can find more detail about moustache anatomy and physiology of beard