Our acid-free, neutral pH glue has excellent lay-flat properties, and dries clear. It is easy to use in liquid form and is based on polyvinyl alcohol (PVoH). Fast setting, re-moistenable and fully reversible. Formulated especially for conservation and restoration work it will not become brittle with age. Adheres to most surfaces and is available in a handy squeezy bottle. Used at times for stretching silks.