In what form do cyanoacrylate adhesives exist?

Cyanoacrylate adhesives exist primarily in a monomer form in a liquid state, which allows them to be easily applied during the eyelash extension process. This type of adhesive quickly polymerizes upon exposure to moisture, which is crucial in a beauty setting where efficient bonding is desired. The liquid monomer form enables precise application and ensures the adhesive can flow into the spaces between the natural lashes and the extensions, creating a strong bond.

The other forms such as solid state, gas state, and crystalline form are not applicable for cyanoacrylate adhesives used in eyelash extensions. Solid state would not allow for the necessary application versatility, while gas state is not suitable for adhesives as they need to remain in a form that allows for bonding. Crystalline forms would also lack the necessary properties for effective bonding to natural hair, making the liquid monomer form the ideal choice for these applications.