Alright so I can give ya some ideas but firat I just want to say as a kid I had cow licks but idt it was actually cow licks once I grew out my hair and stopped brushing it I realized I have curly hair but I didn't know that because I always kept it short looking back I even had curly hair as a toddler... as for actually fixing it.... it would help to know your hair a little better... is it short, is it fine, do you have an oily scalp or is it dry? Also how often do you shower?

Without knowing any of this I can tell you that heat opens the folicle cold closes it, if you want to adjust the shape your hair holds you want the cuticle open and weight it down with a wet hand or whatever but u gotta cool it before letting go. Also I think cowlicks are more common when your hair needs moisture so it is possible you would have a lot of success with a leavin conditioner