Thixotropic materials are substances that become less viscous when subjected to stress or agitation. This means they can flow more easily when stirred or shaken, but return to a thicker state when left undisturbed. Common examples include certain types of paints, gels, and clays. These materials are useful in various applications, such as in the construction industry for cement mixtures and in the cosmetic industry for lotions. Their unique properties allow for easier application and better performance, making them valuable in both everyday products and specialized industrial processes.