Which of the following is a sign of damaged hair?

Frizz and split ends are clear indicators of damaged hair because they reflect the hair's structural integrity being compromised. Healthy hair should appear smooth and reflect light, resulting in a shiny appearance. However, when hair becomes damaged due to factors such as excessive heat styling, chemical treatments, or environmental exposures, it loses moisture and elasticity, leading to frizz. Split ends occur when the protective outer layer of the hair cuticle wears away, resulting in the hair shaft splitting. This damage can cause the hair to become unmanageable and difficult to style, contrasting sharply with the characteristics of healthy hair, which is known for its shiny appearance, even color, and soft texture.