hair on the head; head hair
Formal or technical term for the hair growing on the human scalp, as opposed to body hair or facial hair. In everyday conversation, 髪の毛 or simply 髪 is more common.
Taking care of your head hair is important for maintaining a clean appearance.
My head hair has been thinning with age.
His hair has been thinning lately.
A hair inspection was carried out at school.
I tidied up my hair before the interview.