What is the shape of the hair follicle in tightly curled hair and how does it affect the overall texture and appearance of the hair?

In tightly curled hair, the hair follicle is oval or asymmetrical in shape. This shape causes the hair to grow in a spiral or zigzag pattern, resulting in a coiled or kinky texture. The irregular shape of the follicle also makes the hair more prone to dryness and breakage, giving it a rough and frizzy appearance.