expression, noun
handsome face; beautiful features
Idiomatic phrase literally meaning 'sweet mask', used to describe a man's good-looking face, often with a nuance of charm or gentle attractiveness.
彼は甘いマスクで女性に人気がある。
He is popular with women because of his handsome face.
あの俳優は甘いマスクの持ち主だ。
That actor is the owner of a beautiful face.