Which type of hair has the largest diameter?

Coarse hair has the largest diameter among the types listed. Hair diameter correlates with its thickness, where coarse hair is characterized by a robust structure and feels thicker to the touch compared to fine or medium hair. Understanding hair types is essential in cosmetology, as it influences how products and treatments are applied, as well as the overall styling techniques used. Coarse hair is often more resilient to damage and can hold styles well due to its density. In contrast, fine hair tends to have a smaller diameter, making it more susceptible to damage and often requiring gentler handling and lighter products to avoid weighing it down. Medium hair is somewhere in between, but still does not compare in diameter to coarse hair. Textured hair refers more to the pattern of the hair rather than its diameter, which can vary widely across different individuals.