 Molecular gels are characterized by their ability to undergo multiple transitions between solid, liquid, and gel states. Sol-gel transitions are the most common type of transition, but other types such as gel-to-gel transitions, gel-to-crystal transitions, liquid-liquid phase separations, eutectic transformations, and syneresis have also been observed. This article was authored by Sena Miel Mauser, Duncan Schwaller, and Philippe Jay Mazini.