noun
real hair; one's own hair
Refers to a person's natural, unaltered hair, as opposed to a wig, extensions, or dyed hair.
彼女は地毛がとてもきれいだ。
Her natural hair is very beautiful.
かつらではなく、地毛です。
It's not a wig; it's my real hair.
Compound of 地 (じ, 'natural, base') and 毛 (け, 'hair').