Afm Safecoat Grout Sealer, White 32 Oz. Can 1/Case, Model: 31203, Tools & Hardware store It Actually Reacts With And Becomes A Part Of The Grout, Increasing Water Resistance And Minimizing Like all Safecoat products, it is as safe and not toxic as possible Formaldehyde free and virtually odorless, giving off no offensive chemical fumes Dries clear without discoloration.