Biting Baby

Hey mommas! Does anyone have any tips on how to teach baby to be gentle/not bite. My 9 month old is very rough, he will walk up to you and bite your toes, legs, hands, and face. He grabs your hair and pulls your face in to bite it! It hurts sooo bad. My sister in law has scratches and bite marks all over her from him 😔😔. He’s such a sweetheart and doesn’t mean to hurt anyone, but it’s becoming out of hand!