Understanding Stringy Eyelash Extension Glue: What It Is, Why It Happens, and How to Deal With It

Eyelash extension glue is the MVP of any lash extension kit, but did you know that lash glue has an expiration date? Using expired glue can result in a stringy, goopy mess that’s not only frustrating but can also ruin your lash extension styles. Here, we’ll explore what causes lash glue to go stringy and how to prevent it—because no one wants their clients to be disappointed!

What’s Stringy Glue?

If you’ve ever noticed your glue looking “goopy” or “stringy,” it’s a clear indicator that it’s past its prime. A stringy or gloopy consistency means it’s time for a fresh drop, and if the glue is coming out of the bottle that way, you likely need a new bottle.

Pro Tip: If you’re using a Jade Stone (recommended over glue rings), glue can get slightly stringy after about 15 minutes. Just shake the bottle again and dispense a fresh drop, ideally a bit away from the older, stringy drop.

Why Was My Glue Fine Yesterday, but Stringy Today?

Even if your lash glue worked perfectly yesterday, using it when it’s expired can lead to issues today. Stringy glue is harder to control, takes longer to cure, and increases the chance of glue touching neighboring lashes, creating “stickies” that ruin the look of lash extensions and can damage your clients' natural lashes. Expired glue typically leads to poor retention, whether you’re working with classic or volume extensions.

Risks to Clients

Expired lash adhesive can be risky, as its chemical composition can change over time. This can lead to increased sensitivity in clients. To keep both you and your clients safe, always use fresh glue and ensure you work in a well-ventilated area.

How to Check if Your Glue Is Fresh

1. Check the Date of Production (DOP): This tells you when the glue was manufactured. Use it within 6 months of this date.
2. After Opening: Swap for a new bottle every 4-6 weeks. Add a small tape label on the bottle with the opening date or set a reminder to track when it’s time to replace it.

Pro Tip: Having Glue Storage Tanks and Replacement Nozzles can help extend your glue’s usability by keeping it fresh and preventing clogs.

How to Keep Your Glue Fresh

To keep your glue in top shape:

• Storage: Store unopened glue in the fridge if you like, but never refrigerate opened glue—condensation can form and cure it prematurely.
• Airtight Container: Keep opened glue in an airtight container, away from heat and sunlight, ideally between 18-22ºC.
• Glue Shaker: A Glue Shaker can mix the glue quickly for consistent results without time-consuming hand-shaking.

Bonus Tip: Use a Hygrometer to monitor room temperature and humidity, helping you avoid stringy glue. Accurate room conditions are essential for optimal glue performance!

By following these steps, you can extend the life of your lash glue, avoid the hassle of stringy applications, and maintain quality results for your clients.