Most lash artists have heard the term “formaldehyde free” when it comes to adhesives, but very few actually understand what that means.
Here is the truth.
Cyanoacrylate adhesives do not contain formaldehyde as an added ingredient, but they can release trace amounts during curing and over time as the adhesive breaks down. This is a normal part of how the chemistry works.
So the conversation should not be about chasing labels. It should be about understanding control.
Your environment, your humidity, your temperature, how you store your adhesive, how fresh your bottle is, and how you finish your sets all play a role in reducing exposure and sensitivity.
When you understand this, you stop relying on marketing and start working with intention.
Inside the classroom, I break this down in detail. We go into the chemistry of cyanoacrylate, what actually happens during curing, and exactly how to set up your environment to create better retention and safer applications.