Iowa Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Chemical hair straightening involves applying substances that alter the structure of the hair to provide a sleek look. However, certain hair conditions can severely impact the outcome and safety of the treatment. One significant contraindication is the presence of colored or damaged hair.

When hair has been previously colored or is already damaged, it may be more vulnerable to the harsh chemicals involved in the straightening process. This can lead to further damage, breakage, or unwanted results, as the hair cuticle may be compromised. Colored hair can react adversely to chemical straighteners, leading to unpredictable results such as uneven straightness or even a change in color. It is crucial to assess the condition of the hair thoroughly before proceeding with any chemical treatments to ensure the health and integrity of the hair is maintained.

In contrast, fine hair, thick hair, or normal hair may not inherently present the same level of risk when considering chemical straightening, making them less relevant as contraindications in comparison to colored or damaged hair.