Decola Gilding Glue is a non toxic, water based gilding adhesive The adhesive stays open where extended tack time is required, it dries to a translucent finish and cleans up in water It can be used straight from the bottle with no dilution on porous and non porous surfaces, including: wood, plaster, glass, metal, leather and canvas. This is suitable for use with Decola Metallic Leaf.