Dry hair occurs when hair lacks moisture, leading to a rough texture and increased brittleness. This condition can be caused by various factors, including environmental conditions, excessive heat styling, and the use of harsh hair products. When hair is dry, it may become frizzy, dull, and more prone to breakage. To improve dry hair, it is essential to use moisturizing shampoos and conditioners that contain hydrating ingredients. Regular deep conditioning treatments and minimizing heat exposure can also help restore moisture. Additionally, protecting hair from sun damage and avoiding over-washing can contribute to healthier, more manageable hair.