 Strong self-healing materials with high healing efficiency are of great use in many fields but their fabrication is extremely challenging. Here, the authors present a robust self-healing material by incorporating high-density noncovalent bonds at the interfaces between dintritic tunic acid-modified tungsten-dissulfide nano sheets and a polyurethane matrix to collectively produce a strong interfacial interaction. This article was authored by Yi Yan Wang, Xin Huang, and Xin Xin Zhong.