New York State Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

A contraindication for chemical services refers to conditions or factors that could potentially lead to an adverse reaction or harmful effects when undergoing such treatments. Open cuts or wounds on the scalp pose a significant risk as they can lead to infections or increase the absorption of chemicals, potentially causing pain or further damage to the skin and underlying tissue. Therefore, performing chemical services on a scalp with open cuts or wounds is generally avoided to ensure client safety and minimize complications.

In contrast, while dry hair might affect the outcome of certain chemical treatments, it is not an absolute contraindication as special formulations or techniques can sometimes be used to address this situation. Hair that has been previously colored requires careful consideration, but it is not inherently a contraindication, as it’s common to apply additional chemical services to previously treated hair with appropriate caution and preparation. Curly hair texture does not present a contraindication for chemical services either; rather, specific formulations and techniques can be tailored for different hair textures.