NOCTI Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

Question: 1 / 400

What is a key characteristic of a disinfectant?

Should be used as a lotion

Should be diluted with water

Should remain effective on human skin

Should not be used on human skin

A key characteristic of a disinfectant is that it should not be used on human skin. Disinfectants are formulated to destroy or inactivate harmful microorganisms on non-porous surfaces such as tools, equipment, and countertops. They contain stronger chemical agents that can be potentially harmful or irritating to skin tissue. In contrast, products designed for skin use, such as antiseptics, are milder and safe for human application. Understanding this distinction is crucial, as using a disinfectant on the skin could lead to adverse reactions, such as burns or allergies. Thus, knowing that disinfectants are specifically meant for surfaces rather than direct application on the human body highlights their proper use in professional settings.

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