Questions About Lash Glue? KOLYBEL Can Help!

As a professional lash artist, you know that lash glue is the unsung hero of every flawless lash extension set. It’s the foundation that holds your hard work together, ensures client satisfaction, and even impacts your reputation. But let’s be honest—navigating the world of lash adhesives isn’t always easy. From choosing the right formula to troubleshooting common issues, there are endless questions that pop up, especially as new products hit the market.
That’s why we’ve put together this comprehensive guide to answer the most pressing lash glue questions for professional artists like you. Whether you’re a seasoned pro looking to refine your skills or a newer artist building your expertise, we’ve got you covered.

1. What Are the Key Factors to Consider When Choosing Lash Glue?

Selecting the right lash glue isn’t a one-size-fits-all decision. The best adhesive for you will depend on several critical factors:
  • Drying Time: Fast-drying glues (0.3-2 seconds like LIGHT CARO DIAMOND) are ideal for experienced artists who work quickly, as they reduce the risk of lash slippage during application. Slow-drying glues (3-4 seconds like PERAL) are better for beginners, giving you more time to position lashes precisely.
  • Retention Period: Client retention is key to repeat business. Look for glues that offer 4-8 weeks of retention when applied correctly. This often comes down to the glue’s viscosity (thickness) and bond strength.
  • Sensitivity Formula: Many clients have sensitive eyes or skin. Opt for low-fume, formaldehyde-free sensitive glues(like LOTUS) for these clients to minimize irritation. Even non-sensitive clients will appreciate a low-irritation formula.
  • Climate Adaptability: Humidity and temperature affect lash glue performance. If you work in a humid environment, choose a glue that’s formulated to resist moisture (some even have “humidity-resistant” labels). In dry climates, look for glues that don’t dry out too quickly.

2. Why Is My Lash Glue Not Bonding Properly?

There’s nothing more frustrating than spending time on a set, only to have lashes fall out within days. Poor bonding is usually caused by one of these common mistakes:
  • Improper Prep: Client lash prep is non-negotiable. Oils, makeup residue, and dust on natural lashes will prevent the glue from adhering. Always clean lashes with a lash primer or gentle cleanser, then dry thoroughly before application.
  • Expired or Poorly Stored Glue: Lash glue has a short shelf life—usually 3-6 months unopened and 1-2 months once opened. Exposure to air, light, or extreme temperatures will degrade the glue. Store it in a cool, dark place (some artists use a mini fridge) and always check the expiration date.

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  • Too Much or Too Little Glue: Applying too much glue creates a heavy bond that can weigh down natural lashes and cause premature shedding. Too little glue means the bond isn’t strong enough. Aim for a thin, even layer on the base of the extension—just enough to coat without clumping.
  • Working Too Slow: If you’re using a fast-drying glue but take too long to place the extension, the glue will start to cure (dry) before it bonds to the natural lash. This results in a weak bond that won’t last.

3. How Can I Minimize Client Irritation From Lash Glue?

Irritation (redness, itching, watering eyes) is a top concern for lash artists. While some clients may have a genuine allergy, most irritation is preventable:
  • Patch Tests Are a Must: Always perform a patch test 24-48 hours before the first lash appointment. Apply a tiny amount of glue to the client’s inner elbow or behind the ear, then check for redness, swelling, or itching. This is non-negotiable for new clients or those with a history of skin sensitivity.
  • Use Low-Fume Glues: Fumes from lash glue are a common irritant. Invest in high-quality, low-fume glues to reduce this risk. You can also use a lash fan to blow fumes away from the client’s eyes during application.
  • Avoid Glue Contact With Skin/Eyes: Never apply glue directly to the client’s lash line or skin. Keep the glue on the extension base only, and ensure extensions are placed 1-2mm away from the natural lash line. This prevents glue from seeping into the eye or irritating the delicate eyelid skin.
  • Educate Clients on Aftercare: Post-appointment irritation can often be caused by poor aftercare. Advise clients to avoid water, steam, makeup, and touching their lashes for the first 24-48 hours. This gives the glue time to fully cure and bond.

4. How Should I Store My Lash Glue to Maximize Its Lifespan?

Proper storage is crucial to keeping your lash glue effective. Here’s how to do it right:
  • Keep It Sealed Tight: Air is the enemy of lash glue. Always close the cap tightly immediately after use. Some glues come with a rubber stopper or aluminum seal—use these to prevent air from entering the bottle.
  • Store in a Cool, Dark Place: Heat and light accelerate the breakdown of glue. Avoid storing it near windows, heaters, or in your lash cart if it’s exposed to sunlight. A mini fridge (set to 40-50°F / 4-10°C) is perfect for long-term storage, but let the glue come to room temperature before use (this prevents condensation from getting into the bottle).
  • Don’t Shake the Bottle: Shaking lash glue creates air bubbles, which can weaken the bond and shorten the glue’s lifespan. Instead, roll the bottle gently between your palms to mix the formula.

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5. When Should I Replace My Lash Glue?

Knowing when to toss old glue is key to avoiding bad sets. Here are the red flags:
  • It’s Expired: Always check the expiration date on the bottle. Even if it seems fine, expired glue will have reduced bond strength and retention.
  • Consistency Changes: If the glue becomes too thick, stringy, or watery, it’s time to replace it. Fresh lash glue should have a smooth, consistent viscosity that’s easy to apply.
  • Drying Time Is Off: If your fast-drying glue is taking longer to cure, or your slow-drying glue is drying too quickly, the formula has degraded.
  • It Smells Different: Fresh lash glue has a mild, chemical smell, but if it becomes overly strong or sour, it’s no longer effective.

Final Thoughts: Invest in Quality Glue, Invest in Your Business

Your lash glue is one of the most important tools in your kit. Cutting corners on cheap or low-quality glue can lead to poor retention, client irritation, and damage to your reputation. Take the time to choose the right formula for your style and clients, store it properly, and replace it when needed.
Still have questions about lash glue? Drop them in the KOLYBEL instagram comments below—we’re here to help you master your craft and keep your clients coming back for more flawless lash sets.