What does it mean if an item is nonporous?

If an item is described as nonporous, it indicates that the material does not allow water, air, or other fluids to penetrate or pass through it. This characteristic makes nonporous materials resistant to moisture absorption, which can be crucial in various applications, especially in the beauty industry, where hygiene and cleanliness are paramount. Nonporous surfaces do not provide a breeding ground for bacteria and are easier to sanitize, making them ideal for tools and equipment used in salons.

The other options describe different properties: items that absorb moisture are porous, allowing fluid to enter; materials that permit air to pass through also tend to be porous; and biodegradability pertains to a material's ability to decompose through natural processes, which is unrelated to porosity. Understanding the implications of nonporosity helps professionals in maintaining sanitary practices and choosing the right materials for their work.