He was standing up straight enough now; dressed in a smart blue uniform with gold buttons, the sort worn by the employees at the banking institute; above the high, stiff collar of the coat his strong double-chin emerged; under the bushy eyebrows, his piercing, dark eyes looked out fresh and alert; his normally unkempt white hair was combed down painfully close to his scalp.
There are no more uses of "unkempt" in the book.
Show samples from other sources
This kid has long, unkempt hair and a hardened look about him.
Neal Shusterman -- Unwind
With his dark unkempt hair, his unlined face, he looked no more than twenty-five.