I. Introduction As result of genetic differentiation, every single person in the world has distinct hair, but the main differences between hair types are in texture and thickness. These variations are caused by the genetic make up of the fibers that make up the hair and follicles that generate the fibers. Hair is made from keratin (protein) that is wound in a coil. The turns of the coil are held together in hydrogen bonds. By …showed first 75 words of 645 total…

…showed last 75 words of 645 total…of the fiber. When the cells are added to the fiber in the follicle, they are soft and pliable. As the cells are keratinized in the follicle, they take on the shape of the follicle. Hence curly hair follicles make curly hair fibers. There are also racial differences in the chemical composition of the fiber. African American hair has lower sulfur protein compared to high sulfur protein that is observed in Asian and Caucasian individuals.