Collall Photo Glue is a repositionable petroleum-based rubber-solution glue that's very easy to use. Clear mat Non-acidic No wrinkles Fast-drying Repositionable Easy to remove Chemical properties: Natural rubber dissolved in special boiling point spirit Main ingredient: natural rubber      PH: +/- 6   For gluing paper, carton, cork, textile, leather, photos. Dot the glue on to one surface and leave to dry for a few moments. Then press the two surfaces together. For stronger adhesion, apply the glue to both surfaces.