natural hair; one's own hair
Refers to a person's real, natural hair, often in contrast to wigs, hairpieces, or extensions. Common in beauty and fashion contexts.
Her natural hair is very beautiful.
I want to create that style with my own hair, not a wig.
Compound of 地 (じ, 'natural, real') and 髪 (かみ, 'hair'), with rendaku voicing of かみ to がみ. The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.