HOW TO PROPERLY STORE EYELASH EXTENSION ADHESIVE

Properly storing eyelash extension adhesive is one of the most important—and often underestimated—aspects of a lash artist’s daily work. Even high-quality adhesive can lose its effectiveness if used or stored under unsuitable conditions, affecting the stability and longevity of your extensions.

Humidity and temperature directly influence the behavior of cyanoacrylate, the key component in eyelash extension adhesives. When these parameters aren’t controlled, the adhesive can react differently depending on the season, making it more challenging to maintain consistent results throughout the year.

In this article, we’ll explore how humidity and temperature affect eyelash extension adhesive, what happens when these parameters are not balanced, and how to store the product correctly to ensure optimal performance.

How eyelash extension adhesive works: the role of cyanoaceylate

Eyelash extension adhesive reacts to the environment in which it is used. Its performance depends mainly on cyanoacrylate, the active ingredient responsible for bonding the extensions to the natural lashes.

Cyanoacrylate activates upon contact with moisture in the air. This reaction allows the adhesive to transition quickly from a liquid to a solid state, securely fixing the extension. Without a minimum level of humidity, this process cannot occur properly.

Humidity is therefore not something to avoid—it is essential for polymerization, the moment when the adhesive sets and becomes stable. When environmental parameters are balanced, drying time is predictable, and the bond is uniform and strong.

If humidity and temperature are not controlled, polymerization times can vary, making precision and consistency more difficult. Understanding how adhesive behaves is the first step in managing your work environment effectively.

For more details on lash extension basics, visit our blog: Eyelash extensions: everything you need to know.

Humidity and temperature: the invisible enemies of eyelash adhesive

“The glue isn’t sticking” is one of the most common issues encountered during eyelash extension treatments. Often, people immediately assume the product is defective, but in most cases the cause is something else.

Humidity and temperature directly affect the behavior of the adhesive during application. Even small variations can change drying times, bonding control, and the final result.

Humidity is a key factor for proper polymerization of the adhesive. The ideal humidity range for open adhesive is 45–55%. Monitoring this parameter helps ensure optimal performance and stable bonding throughout the treatment.

Temperature also plays an important role, so it’s crucial to maintain the right balance, avoiding conditions that are too hot or too cold, which can affect adhesive performance. The recommended working temperature range is 18–22°C.

In the following sections, we will explain how to practically monitor humidity and how to store adhesive correctly to maintain its effectiveness.

How to easily monitor humidity and temperature

Controlling humidity and temperature is essential for successful lash extension treatments. An hygrometer is the ideal tool for your workstation: it accurately measures humidity and temperature, preventing surprises during application.

Explore our Tools / accessories category to find all the essential instruments for performing eyelash and brow extensions safely and professionally.

Monitoring these parameters allows for greater precision, reducing errors and product waste.

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How to store eyelash extension adhesive

To keep your adhesive performing at its best, follow these simple but effective storage guidelines:

- Never leave it open: exposure to air reduces effectiveness.

- Keep it upright: maintaining the bottle vertical prevents the adhesive from clogging the cap.

- Check humidity: ideally keep it between 45–55%, using a hygrometer for accuracy.

- Check temperature: store between 10°C and 25°C, avoiding temperature fluctuations that can compromise performance. Never refrigerate! Low temperatures and internal condensation can trigger unwanted reactions in the adhesive.

- Protect from heat and light: keep away from direct heat sources and sunlight, which degrade the product.

Following these simple steps ensures your adhesive remains in optimal condition, providing consistent results with every treatment.

How to choose the right adhesive

Choosing the right adhesive mainly depends on polymerization time: fast-drying adhesives set quickly, while slower adhesives give you more time for precise work.

There’s no universal “best” solution. Every lash artist should evaluate which adhesive suits their skill level and working style.

FAQ: Kalentin answers 

How should eyelash extension glue be stored?

Keep the glue tightly closed, stored upright, away from heat and light, at a stable temperature between 10°C and 25°C, with humidity between 45–55%.

What does eyelash extension glue contain?

The glue contains cyanoacrylate, the component that allows fast adhesion of extensions to natural lashes.

How can you prevent the glue from drying out?

Avoid leaving it open, store it upright, and monitor humidity and temperature to maintain its performance.

Discover Kalentin products for eyelash and brow extensions 

We’ve seen how humidity and temperature are key factors for working effectively with eyelash extension adhesive. We covered how to monitor these parameters using simple tools like a hygrometer and outlined the best practices for proper adhesive storage. We also touched on how to choose the adhesive that fits your working style.

By following these practical tips, you can work more precisely, avoid common mistakes, and achieve long-lasting, professional results.

Discover all you need in our Brow extensions, Primer, adhesives, and removers categories to keep everything at hand and work at your best every day.