Henry Schein Vinylpolysiloxane (VPS Hydro) is a hydrophilic addition silicone impression material that is supplied in a cartridge system. Henry Schein VPS Hydro impression material is thixotropic—it doesn't flow away on its own, but it flows under pressure.
Henry Schein VPS Hydro Light Body is available in two different types: Fast Set and Regular Set.
Light Body, Fast Set is primarily intended for one or two separate impressions where faster setting is required.