Get to experience a coily culture.
The shape of the hair follicle determines the hair's curliness. An individual hair's shape is never completely circular. The cross-section of a hair is an ellipse, which can tend towards a circle or be distinctly flattened. East Asiatic heads of straight hair are formed from almost-round hair follicles producing straight hair, and European hair follicle forms oval shapes which produce wavy hair.
