MiraGard NanoGlass Admixture is a clear, single component, water-based, fortified colloidal silicate that densifies new pool and spa plaster finishes. Based on superior inorganic mineral technology, it will significantly extend the service life of pool plaster and minimize the potential for the most common problems associated with pools such as etching, dusting, discoloration, cracking, and calcium nodules.cementitious materials such as concrete, mortars and masonry.