From Optimum Care Care:
Opti-Coat (sometimes referred to as Opti-Guard) is a hard wearing, ceramic clear coat for superior resistance to scratching (9H) and chemical etching from environmental impacts.
The Opti-Coat pre-polymer cross links, and forms a continuous film on the surfaces it is applied to, similar to a single component isocyanate that forms a clear coat finish.
Opti-Coat has better chemical resistance, scratch & mar resistance, and release properties than any automotive coating in use. It provides permanent protection for all modern factory paints, and can also be applied to exterior glass, metal and hard plastic surfaces.