Polymerization sounds complicated, but the basic idea is simple.
When cyanoacrylate adhesive cures, small molecules called monomers react and connect into much larger chains called polymers.
The liquid adhesive becomes a solid material.
Why Does This Matter Behind the Lash Bed?
It helps you understand that adhesive curing is a process.
Once the adhesive leaves your bottle, the environment and your application timing become important parts of what happens next.
This is why you cannot think about adhesive speed only as the number printed on a bottle.
Your actual working experience depends on the formula, environment, amount of adhesive, and how quickly you create your attachment.
Cure Time and Working Time Are Not the Same Idea
Artists sometimes hear that an adhesive has a certain cure time and assume they have exactly that amount of time to place the extension.
Real application is more complex.
Your adhesive begins interacting with its environment while you are working. Your usable placement window needs to match your technique.
This is why an adhesive can feel perfect for one artist and too fast for another.
The Takeaway
Polymerization is the chemical process helping turn your liquid adhesive into the solid material holding the extension.
Understanding that one concept makes humidity, adhesive speed, and application timing much easier to understand.
Learn next: What Is Cyanoacrylate in Lash Adhesive? Why Does Humidity Affect Lash Adhesive? Why Is My Lash Glue Drying Too Fast?