collodion

/K AH0 L OW1 D IY0 AH0 N/
noun
  1. 1

    A syrupy solution of pyroxylin in alcohol and ether that evaporates on a surface to form a clear elastic film; used in surgical dressings, photographic plates and lacquer paints.

Source: https://en.wiktionary.org/wiki/collodion