Formulations

Alpha-cyanoacrylate adhesives of fluorescent color having incorporated therein at least one member selected from C.I. Solvent Green 5; C.I. Acid Red 50 and C.I. Acid Red 52.

A cyanoacrylate-based adhesive composition is disclosed. The cyanoacrylate-based adhesive composition includes a cyanoacrylate monomer, and a bleachable dye including a Michler's hydrol cation or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.