Why Do Lash Fans Close? Causes, Mistakes, and Ways to Create the Perfect Fan
14th Dec 2025
Do your lash fans keep closing during application? Discover the most common mistakes and proven ways to achieve a long-lasting, perfectly open fan.
In this article, you’ll learn:
➤ Why do lash fans close?
➤ Which working conditions affect lash adhesive behavior?
➤ How to properly control the amount of glue when creating a fan?
➤ How to prepare natural lashes to prevent fans from closing?
➤ How to maintain proper fan structure and avoid common mistakes?
Creating flawless lash fans is a true art that requires precision and a solid understanding of several key factors. If your fans tend to close while working with adhesive, you’re not alone—this is one of the most common challenges faced by lash stylists. Fortunately, the causes are well known, and the solutions are easy to implement.
Working Conditions – Temperature and Humidity
Lash adhesive is extremely sensitive to environmental conditions. If the humidity is too low, the glue cures too slowly; if it’s too high, it cures too fast. In both cases, this can cause the lash fan to close.
Optimal working conditions:
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Temperature: 20–23°C (68–73°F)
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Humidity: 45–60%
To maintain stability, it’s worth using a hygrometer and an air humidifier to help control the conditions in your salon.
Proper Glue Control
The moment the fan touches the glue drop is crucial. One of the most common mistakes is dipping the base of the fan too deeply—this allows glue to seep between the lashes, causing them to stick together and close.
How to avoid this:
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Dip the fan into the glue from above, at a right angle.
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Immerse only about 1–2 mm of the fan base.
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Never dip the entire base—excess glue will collapse the fan.
Correct technique for dipping a lash fan into adhesive
Fan Structure – Proportions Matter
A well-balanced fan should have a properly constructed base and a symmetrical spread. As a general rule, about one-third of the fan’s length should be the base, while the remaining part forms the fan itself.
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A base that’s too long increases the risk of fan closure.
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A base that’s too short may cause the fan to fall apart.
Proper Preparation of Natural Lashes
Clean natural lashes are the foundation of a durable lash application. If the lash surface is not properly cleansed, the fan may not adhere correctly or may close immediately after application.
Correct preparation steps:
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Clean the lashes using a lash shampoo or foam cleanser.
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Degrease them with a professional cleanser.
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Apply a primer to speed up the adhesive curing process.
How to Practice Creating Lash Fans?
Mastering the ability to create durable, evenly spread fans comes with consistent practice. Training strips allow you to gradually improve glue control and hand precision while building confidence in your technique.
Lash Tip:
Reach for a training set every day—consistent practice is the fastest path to achieving flawless lash styling results.
Creating perfect lash fans is a skill that combines technique, precision, and an understanding of the process. Fan closure is most often caused by three factors: improper working conditions, incorrect glue-dipping technique, or inadequate preparation of natural lashes. By controlling these elements, you’ll gain stability in your work and achieve long-lasting, aesthetically pleasing results. Remember—regular practice is the key to success.
Create Perfect Lash Fans with Noble Lashes
Ensure durability and flawless results by choosing professional adhesives and lash accessories.