The hair on Justin Timberlake's head is doing the same thing he did to his music career: abandoning it!
A friend of the singer turned actor says "he's keeping his hair super-short so no one notices" and "using specially formulated shampoo to promote hair growth" so he won't go bald.
Maybe you should give Tim McGraw a jingle, JT. We're sure he can give you a few tips on how to hide it.
[Image via Adriana M. Barraza/WENN.]