Your hair type is genetically predetermined and there is nothing you can do to permanently alter the way it grows (although it may undergo some natural texture alterations with age and hormonal changes). However, there are many styling solutions to get it looking the way you want, such as curling or straightening tools, which can help you get the desired appearance. Hair treatments like perms or hair relaxers can change your hair appearance for a longer amount of time (just be sure to use them sparingly, as they can damage your hair).