Creaform is mixed in a proportion of 3:1 with water. Processing time app. 5 min. after mixing. It stays in a rubber like, pliable form. Not as tearproof as silicon. Rough surfaces require coating with a separation material (e.g. Cancol) . Non toxic, can be used for live moulds safely i.e. hands or feet etc. Not perfect for filling with wax, better suited for plaster and ceramics.