When this organic polymer is cut in half, it will rejoin spontaneously and gain its original strength when placed next to each other for 2 hours. This can be used to increase durability of materials. Imagine the possibilities. This is the first reported discovery of this type and it is also simple and inexpensive. “It is the metathesis reaction of aromatic disulphides, which naturally exchange at room temperature, that causes regeneration.” Basically, this means the chemicals emitted that could be smelled react with nearby compounds to form bonds reforming the polymer.