(a) hair
「髪」 has another reading with different meanings.
hair (on the head)
immediately; instantly; with nary a pause; without a moment's delay
one-thousandth; 0.03 mm (one-thousandth of a sun); 0.01 percent (one-thousandth…
最近白髪が増えてきましたね。
I've been getting more gray hair.
毛髪の健康を保ちましょう。
Let's maintain healthy hair.
金髪に染めてみたいです。
I want to try dyeing my hair blonde.