Jon Bon Jovi has a longer hair style  There are many long layers throughout the head.  The crown area has height that can be created by back-combing the long layers.

The hair is parted slightly on the right side, but is an undefined part.

To create this style, add a styling product to hair and blow dry using your fingers. Run your fingers through your hair as you dry it, scrunching it a bit when almost dry to create the slight wave look. 

For frizzy hair, or hard to manage hair, you may want to run a flat iron through the hair, from roots to the ends.

Finish with a shine serum for that healthy shine look.