he looked younger after he shaved off his mustache.
Examples of mustache
mustache
Maynard sported a Fu Manchu mustache when Gideon first met him, his friend said.
From the denverpost.com
To be sure, I did not hold my own mustache in the highest regard for many years.
From the post-gazette.com
Daniel Radcliffe grows up, sports a mustache and escapes his Harry Potter image.
From the orlandosentinel.com
Last year, Shyne advised McInnis to change his glasses and to lose his mustache.
From the denverpost.com
Mirandola's mustache has been working nearly as long as Laudadio has been alive.
From the dailyherald.com
It's amber-colored with a foamy top, which left me with a little white mustache.
From the orlandosentinel.com
This is like giving a State of the Union address in Groucho glasses and mustache.
From the sportsillustrated.cnn.com
Mr. Grieco himself sports a pencil-thin mustache, soul patch and RIESLING tattoo.
From the online.wsj.com
The mustache kind of represented the old me, which I didn't want to be anymore.
From the stltoday.com
More examples
An unshaved growth of hair on the upper lip; "he looked younger after he shaved off his mustache"
A moustache (mustache; in RP and in General American) is facial hair grown on the upper lip. It may or may not be accompanied by a beard, hair around the entire face.
A growth of facial hair between the nose and the upper lip
To dream that you have a mustache, denotes that your egotism and effrontery will cause you a poor inheritance in worldy{sic} goods, and you will betray women to their sorrow. If a woman dreams of admiring a mustache, her virtue is in danger, and she should be mindful of her conduct. ...
Male facial hair on the upper lip, a different kind of uncircumcision of lips. (Exo 6:12) :-{)^[133] They are now common among Witness men, but for most of the 20th century, until the early 1970s, they were regarded in much the same light as {beards}.