What term describes the thickness of a liquid?

The term that describes the thickness of a liquid is viscosity. Viscosity refers to a liquid's resistance to flow; it measures how quickly or easily a liquid pours. For instance, honey has a higher viscosity compared to water, meaning it flows more slowly and is thicker.

In contrast, thixotropy is a specific property of certain gels or fluids that become less viscous when agitated but return to a thicker state when left undisturbed. Homogeneous describes a mixture that is uniform in composition throughout, such as saltwater, but it does not provide a direct measurement of thickness. Fluidity is a term that relates to how easily a fluid can flow, but it is not synonymous with viscosity, as it does not measure the resistance to flow.

Understanding viscosity is crucial in beauty therapy, especially when dealing with products such as creams, lotions, and serums, as the viscosity can affect application techniques and the overall experience for the client.