I think his hair in a bit curly--rather an anomaly for a Cardassian--and after he combs it, it starts to do what it wants... I can almost hear a sound a spring makes when popping out of an old mattress when this happens
It wouldn't be a problem if his hair were longer but...I think he likes it that way
I also added wrinkles under his ridges. I assumed that this also could be a place where, with age, skin gets deeper lines, as ridges have limited flexibility but still are in place and when a Cardassian face changes its expressions, the skin wrinkles there and with time that leaves signs.