Question

Glycerine in toothpaste is used as _______

• A. \( \text{Binding agent} \)
• B. \( \text{Foaming agent} \)
• C. \( \text{Humectant} \)
• D. \( \text{Sweetening agent} \)

Hint:

Think of glycerine as something that keeps things moist – like in lotions or toothpaste. "Humectant" means moisture-retaining.

Answer 1

The Correct Option is C

Glycerine is a common ingredient in toothpaste primarily used as a humectant. Humectants help to retain moisture and prevent the toothpaste from drying out in the tube, maintaining its smooth texture and usability over time. While glycerine has a slightly sweet taste, it is not its primary role in toothpaste (sweetening agents like sorbitol or xylitol are used for that purpose). It doesn't act as a binding agent (which provides cohesion) or a foaming agent (surfactants like sodium lauryl sulfate are used for foaming).