Question:
My facial hair is beginning to become a nuisance, in particular my mustache, which is now extending down my upper lip into my mouth. If it becomes a source of semi-constant irritation, am I allowed to get it cut prior to the Omer ending?
Additionally, if my appearance is no longer professional and my work requires a formal look, would it be permissible to likewise cut the hair?
Answer:
If it extends into your mouth, and it interferes with your eating it is permitted to cut during the omer.
Regarding cutting your hair, I don't know your situation, the general rule is that if you are afraid that it will cause you a financial loss it is permitted to cut.
Sources:
O:CH 551-13, Kovetz Halachos (Sefira)10-3,4, in the name of R' A. Kotler zt"l.