Rosco CrystalGel is a non-toxic, water-based material which provides a clear, plastic-like coating on virtually any surface used in modern stagecraft. It air-dries quickly - usually within hours - to a flexible, translucent surface. When dry, it can be painted with any Rosco scenic paint, or carved, or safely rolled without cracking, peeling, or sticking. Such products as sand, sawdust or powdered clay can be added to it to create unique textures.
CrystalGel is a styrene resin, providing the greatest adhesion power of any non-oil based product. Among the soft surfaces to which CrystalGel will adhere are styrofoam, ethafoam and, of course, muslin and fabrics. Among the more rigid surfaces to which CrystalGel will adhere are metals, glass, plastics, wood, Luan and fiberboard. It is particularly effective in adhering to plexiglass without hardening off. This is a 5 gallon plastic bucket of CrystalGel.