* Hair Texture: Hair texture is determined by the shape of the hair follicle and the amount of keratin (a protein) in the hair shaft. Curly hair has a more oval-shaped follicle, while straight hair has a rounder follicle.
* Genetics: Hair texture is primarily determined by genetics, meaning it's passed down from your parents.
* Hair Type: There's a wide spectrum of hair textures, from perfectly straight to extremely curly. Some people have a mix of straight and curly hair.
So, it's more accurate to say that hair can be straight, wavy, curly, or coily, with many variations in between!