He has gray hair.

他有一头灰发。

youdao

He added, however, that he rarely feels stress at all, an assertion supported by his appearance: at the age of fifty-five, he has a lightly lined face and chestnut hair that is barely marked by gray.

NEWYORKER: The General��s Dilemma

Wolfowitz, who is sixty-three, has jug ears, hazel eyes, a furrowed brow, and thinning gray hair that he combs to the right.

NEWYORKER: The Next Crusade