noun
masker
A person who wears a mask, or a device that applies a mask (e.g., a facial mask). Common in contexts like diving, medical, or beauty.
ダイビングのとき、マスカは必須の装備だ。
When diving, a masker is essential equipment.
美容室でフェイシャルマスカを使ってもらった。
I had a facial masker used on me at the beauty salon.