It's very unlikely Chewbacca the Wookie from Star Wars will go bald.
Most hair covered animals don't "go bald" as they get older. We (humans) are one of the exceptions.
Although we don't knew were Chewbacca is from or what species he is, if you look at animals on Earth, it's unlikely that any Wookie will go bald.
I love that hairy Wookie.