Typical components of eyelash extension adhesive are as the following:

90~95% of Cyanoacrylate

5~10%  of Complex compounds such as stabilizer, thickener, hardening accelerator, colorant, etc.

What are the different types of Cyanoacrylate?

Methyl-Cyanoacrylate:

Methyl type is a toxic substance. Therefore, it is strictly classified and used even for industrial purposes. Methyl type can dissolve the proteins and lead to permanent blindness. You should NEVER choose an adhesive contains this.

Ethyl-Cyanoacrylate:

Ethyl type is mostly used for eyelash extension glue. Its drying time is fast and the adhesion is strong, but the odor and irritation are quite strong. 

Alkoxy-Cyanoacrylate:

Alkoxy type is 8 times more expensive than the Ethyl type Cyanoacrylate. It is developed as a hypoallergenic and low odor type product.

Butyl-Cyanoacrylate:

Butyl type is an instant adhesive that is made for hypoallergenic and low odor aimed at the use of medical and veterinary. Compared to Ethyl, its drying time is slower and the adhesion is weaker. It is mostly used for medical adhesive or thickener in cosmetics. 

Methoxy-Cyanoacrylate:

Methoxy type is the least irritating and odorless among all the Cyanoacrylates. It is developed to improve the problems caused by the irritation and odor of Ethyl and Butyl-type glue. Its drying time is slower and the adhesion is weaker, compared to Ethyl and Butyl-type glue.