Using a cyanoacrylate activator ... Attempting To Fix Wool, Cotton, Or Leather With The Glue Put down the bottle of superglue if you need to repair any leather, cotton, or wool.

Super glue is composed of an acrylic resin called cyanoacrylate that forms strong ... in the air can cause the glue to harden inside the bottle or tube, so keeping the bottle in a dry location ...