Cyanoacrylate, a synthetic adhesive, is a fast polymerizable liquid monomer. Serendipity led to the discovery of cyanoacrylate adhesives in 1951. Today, a specific cyanoacrylate monomer, 2-octyl cyanoacrylate, is being used in a topical medical adhesive formulation. The only over-the-counter cyanoacrylate-based product cleared by the Food and Drug Administration is Colgate ORABASE Soothe.N. Seal Liquid Protectant. Upon application, this liquid monomer formulation polymerizes instantly into a thin, flexible polymer film that adheres tenaciously to mucosal tissue. This polymer film creates a mechanical barrier that provides immediate and long-term pain relief of oral ulcerations and irritations, and maintains a natural healing environment for the area to heal.