Damaged hair refers to hair that has been harmed by various factors, leading to a loss of its natural strength and shine. Common causes include excessive heat from styling tools, chemical treatments like coloring or perming, and environmental factors such as sun exposure and pollution. This damage can result in split ends, breakage, and a dull appearance. To care for damaged hair, it is essential to use gentle shampoos and conditioners designed for repair. Regular deep conditioning treatments can help restore moisture and improve hair texture. Additionally, minimizing heat styling and protecting hair from environmental stressors can prevent further damage and promote healthier hair growth.