What is a common side effect of using strong hair dyes?

Using strong hair dyes can often lead to hair breakage, which is a significant concern for those who frequently color their hair. The harsh chemicals present in many hair dyes, especially those that are designed to provide vibrant or long-lasting color, can weaken the hair's structure. This weakening occurs because these chemicals can strip the hair of its natural oils and proteins, making it more susceptible to damage. As a result, the hair becomes brittle and may fracture when subjected to regular styling, environmental stressors, or even when combing or brushing.

While increased shine, color fading, and itchiness are also potential hair dye effects, they do not carry the same level of risk as hair breakage. Increased shine may occur due to the dye reflecting light or conditioning agents in the dye, while color fading is typically a result of washout over time rather than immediate damage. Itchiness, although it can occur from chemical irritation, is usually less common compared to the structural damage that strong dyes may cause to the hair itself. Thus, hair breakage is a major and direct consequence of using strong hair dyes.