Curly hair is characterized by its spiral or wave-like structure, which results from the shape of the hair follicle. This type of hair can vary in tightness, ranging from loose waves to tight coils. The natural curl pattern is influenced by genetics and can be affected by factors such as humidity and hair care practices. People with curly hair often experience unique challenges, such as dryness and frizz, due to the hair's structure making it harder for natural oils to travel down the hair shaft. Proper care, including moisturizing products and specific styling techniques, can help maintain the health and appearance of curly hair.