Breaking it down: Type 1: Naturally straight hair. Type 2: Wavy Curly: Big, looser curls with the same ‘S’ shape but larger. Type 3: Curly Kinky: Well defined, springy curls often with a ‘S’ shape. This is the most common type. Type 4: Kinky Coily: Tightly curled coils with a distinct curl pattern and high shrinkage.