Esthetics Core Written Practice Test

Which of the following is an example of a non-porous item?

1. A sponge

2. A towel

3. A metal tool

4. A paper sheet

The correct answer is: A metal tool

A non-porous item is one that does not have holes or pores allowing substances like liquids or air to pass through. This characteristic makes non-porous items easier to clean and disinfect, which is particularly important in esthetics and other health and beauty industries. Metal tools fit this definition because they are solid and have a smooth surface, preventing the absorption of liquids. Their impermeability ensures that they can be effectively sanitized without harboring bacteria or moisture, making them safe and hygienic for use in various treatments. In contrast, other options such as a sponge, towel, and paper sheet possess porous characteristics, allowing for the absorption of liquids. Sponges are designed to soak up water, towels are utilized for drying and can retain moisture, and paper sheets are absorbent as well. These properties make them less suitable for high-level disinfection, especially in a professional setting where contamination can occur.