This water-based SB Catalystª accelerates curing of ISLAND GIRL®'s Reesin-based coatings. These include (SIMPLY BRILLIANTª Superwax,,MIRROR HARDª Superglaze and  NON-SLIP Superglazeª. This product is very useful in cooler climates and on porous gelcoat. regardless of temperature . its use is obligatory with the new versions of the resin products introduced in June 2021.