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face with no make-up; unpainted face
true face (of a country, celebrity, etc.); real face; true picture; real nature
sober face; sobriety
彼女の素顔はとても若々しい。
Her makeup-free face looks very youthful.
この本では有名人の素顔に迫る。
This book delves into the true selves of celebrities.
仕事中の厳しい表情とは違う素顔を見せてくれた。
He showed me a different, unguarded side from his strict face at work.