Here is a natural hair care routine for damaged hair: Shampoo with a gentle, sulfate-free formula and only when necessary. Use a deep conditioning treatment once a week, such as a mixture of mayonnaise, egg, and avocado. Avoid heat styling and harsh chemicals, and opt for air drying or using heat-free styling techniques. Trim split ends regularly to prevent further damage. Massage the scalp regularly with a mixture of warm oil, such as coconut or olive oil, to increase blood flow and promote hair growth. Incorporate hair-healthy foods into your diet, such as salmon, eggs, and leafy greens. Avoid using tight hairstyles that pull on the hair, such as tight braids or ponytails. Protect hair from damage due to sun, wind, and other environmental factors by wearing a hat or scarf. It is also important to note that everyone's hair is unique and what works for one person may not work for another, so it may take some trial and error to find the best routine for your damaged hair.