Idaho Cosmetology Licensure Practice Exam

Over-processing hair refers to the excessive application of chemical treatments such as coloring, perming, or relaxing. This can lead to a breakdown of the hair's natural structure, which diminishes its integrity. The common effect of this process is dryness and brittleness, as the hair becomes stripped of essential moisture and nutrients. When the hair is over-processed, the cuticle—the outer protective layer—may become damaged, leading to a loss of moisture retention, making the hair feel rough and look dull. Thus, the hair’s natural elasticity decreases, resulting in breakage and an overall unhealthy appearance, which aligns clearly with the understanding of the impacts of over-processing.