Thick hair refers to hair that has a larger diameter and more density compared to fine or thin hair. It often appears fuller and can hold styles better due to its volume. People with thick hair may have a more robust hair texture, which can be straight, wavy, or curly. Caring for thick hair may require specific products, such as moisturizing shampoos and conditioners, to prevent dryness. Additionally, thick hair can be more resistant to damage, but it may also take longer to dry and style. Regular trims help maintain its health and shape.