Kurt Russell has never really stopped experimenting with his hair, although in 2019, you're more likely to see him wearing it short than long. He's had various long hair phases over the years, though, and never more so than during the late 1980s.
This picture, taken in 1989, shows us the mullet by which all other mullets should be judged. It's the hairstyle in its perfect form, worn with total nonchalance by Russell. He almost makes it look like a sensible hairstyle!