Why Lash Care Liquids Matter for Long-Lasting Lash Extensions

Want to get the most out of every lash set? Eyelash glue alone isn’t enough to guarantee long-lasting retention. That’s where lash care liquids come in—formulated with purpose, they work behind the scenes to enhance retention, reduce irritation, and support overall lash health.

From prepping natural lashes for better adhesion to speeding up glue drying time to sealing bonds and locking in results—each liquid plays a critical role at every stage of the lash extension process. When used correctly, these solutions can significantly extend wear time—set after set, appointment after appointment.

So, which ones matter most? These are the top 3 must-have lash care liquids every lash artist swears by: Primer, Glue Accelerator, and Super Bonder.

The Dream Cast of Retention: Meet Your Lash Care A-Team

Lash Primer

Key Features

Designed for use at the very start of any eyelash extension service, Pure Primer is a powerful, transparent liquid that removes makeup residue, dirt, and leftover oils—even after lash shampooing. It thoroughly preps the natural lashes, setting the stage for a smooth and secure application.

Thanks to its upgraded formula, Pure Primer enhances adhesive bonding by promoting a better grip between the glue and natural lashes, thereby improving retention and overall application performance.

Infused with nourishing ingredients, Lii Lash’s Pure Primer also hydrates and protects the natural lash line, shielding it from potential damage caused by adhesives, heat, and humidity during the process.

• Removes dust, oils, and impurities from natural lashes 

• Hydrates and moisturizes the lash line pH-balanced to support natural lash health 

• Enhances glue adhesion 

• Boosts retention for longer-lasting extensions

How It Boosts Lash Retention

Lash retention begins with the right foundation—and that starts with a well-formulated primer. Each ingredient in Lii’s Pure Primer plays a targeted role in preparing natural lashes for optimal glue performance, stronger bonds, and longer-lasting results.

Deionized water (Di-water) serves as a gentle, skin-friendly base. It purifies without interfering with the adhesive’s curing process and helps soothe the lash line, reducing irritation and ensuring a smooth prep experience.

Ethyl alcohol, the primer’s main activity, delivers deep cleansing and sanitizing power. It removes oils, dust, and impurities—common barriers to adhesion. Its quick-drying nature also speeds up prep, leaving a clean, dry surface for a stronger glue grip.

Silane plays a standout role in retention. Acting as a chemical bridge between natural lashes and adhesive, it enhances the adhesion of the adhesive to the natural lashes and keeps the extensions longer while improving resistance to humidity and oil—minimizing premature shedding and extending lash wear, even in challenging conditions.

Acetic anhydride helps smooth the lash surface and balance pH levels, creating the ideal environment for secure bonding and promoting lash health.

Together, these carefully selected ingredients don’t just clean—they condition, protect, and prime. The result: a stronger adhesive bond, better shape hold, and lash extensions that stay flawless, set after set.

When and How to Use

Lash Primer acts as a pre-treatment step, applied after cleansing the natural lashes (with lash shampoo and protein remover) and before adhesive and extension application.

Step-by-step:

• Ensure the natural lashes are completely clean and dry.

• Apply a small amount of primer to a microfiber brush.

• Gently swipe across the natural lash line, focusing on the lash base where extensions will adhere.

• Allow the primer to air dry for 30–60 seconds before applying the next liquid.

Pro Tip: Avoid over-saturating—excess primer can interfere with adhesive performance rather than improve it.

Glue Accelerator

Key Features

The Glue Accelerator is applied after lash prep and before extension application to rapidly speed up glue curing by enhancing its reaction with ambient humidity. It instantly locks the fan shape in place, preventing unwanted fanning or asymmetry and allowing for faster, cleaner, and more efficient application—without sudden shock curing. Especially effective in low-humidity environments, it also removes excess oils and impurities from the natural lashes, creating the ideal base for stronger, longer-lasting bonds and flawless lash styling.

With reduced glue drying time, lash artists can apply extensions more quickly and effortlessly, leading to shorter appointments, higher client turnover, increased profits—or simply more time for you to rest, recharge, and focus on your well-being.

• Accelerates adhesive curing

• Prevents fan closure

• Cuts down overall application time

• Strengthens bond for lasting beauty

How It Boosts Lash Retention

By accelerating the bonding process, Lii Lash's Glue Accelerator not only saves time during lash application but also enhances adhesion, providing clients with longer-lasting results. This is made possible by a specially researched formula that combines key ingredients, including water, Propylene Glycol, Leucine, Citric Acid, Retinyl Palmitate, Sodium Chloride, Potassium Lactate, Phytic Acid, and Sorbic Acid.

At the heart of its fast-curing power is Propylene Glycol — a moisture-retaining agent that also facilitates the reaction between lash glue and humidity, speeding up curing while avoiding the risks of shock polymerization. Phytic Acid plays a crucial role in cleansing the natural lashes by removing residual ions and heavy metals, ensuring a clean surface for optimal glue adhesion.

Citric Acid fine-tunes the pH environment, allowing the glue to cure more efficiently and last longer, while Leucine helps protect the structure of natural lashes, supporting better retention and preventing premature fallout.

This carefully balanced blend of moisture conductors, pH regulators, and surface purifiers ensures faster drying, cleaner bonding, and stronger retention—especially effective in low-humidity conditions.

When and How to Use

Similar to Primer, the Glue Accelerator is a pre-treatment step designed to be used after cleansing with Lash Foam Cleanser and Protein Primer. While Primer strengthens the natural lash base, the Accelerator preps the lash extensions for faster, stronger bonding—just before applying adhesive.

Step-by-step:

• Dispense a small drop of glue accelerator onto a clean, non-porous surface.

• Dip a microfiber brush into the drop.

• Gently apply the brush along the base of the lash extensions on the strip.

• Allow it to sit for 1–2 minutes before beginning the lash application.

Pro Tip: Use Glue Accelerator in low-humidity environments to maintain consistent glue performance, speed up curing time, and reduce fan collapse—especially helpful for volume and mega volume sets.

Super Bonder

Key Features

As its name suggests, Super Bonder is designed to strengthen the bond between eyelash extensions and natural lashes, maximizing adhesion for longer-lasting results. Unlike primers or accelerators used before glue, Super Bonder is applied after the lash extension process. This post-application sealant speeds up the final curing of the adhesive, locking in the bond while reducing fumes and irritation. Just a small amount at the end of the service helps seal the glue surface, creating a flexible, long-lasting bond. For lash artists seeking stronger retention, reduced sensitivity, and faster results, Super Bonder is a true game changer.

• Adds flexibility to adhesive bonds for better durability

• Locks in strong, long-lasting retention

• Cuts curing time down to just 3 hours

• Provides a 24-hour odor-free experience

• Reduces irritation and minimizes client sensitivity

• Maximizes lash retention for long-lasting results

How It Boosts Lash Retention

Most eyelash extension Super Bonders on the market rely on Citric Acid and Propylene Glycol as their core agents — powerful compounds that accelerate glue curing, even in non-water-based formulas. Similar to a glue accelerator, this duo works by repelling moisture from the adhesive surface, optimizing the chemical reaction between glue and humidity, and adjusting pH to an ideal level. The result: a faster seal, more efficient drying, and a stronger, tighter bond.

To elevate the lash extension experience while maintaining the health of natural lashes, Lii Lash’s Super Bonder goes a step further. It’s uniquely enriched with Retinyl Palmitate (a Vitamin A derivative) that nourishes and softens the natural lashes post-application, while protecting the formula from oxidation to extend shelf life and minimize irritation. The addition of L-Arginine, a mild alkaline amino acid, supports healthy follicle activity, strengthens natural lashes, and helps balance pH for a gentler, less irritating glue experience.

This thoughtful balance of fast curing, lash-friendly protection, and controlled moisture response makes Lii Lash Super Bonder a true game changer—delivering longer-lasting retention and stronger hold, trusted by professional lash artists.

When and How to Use

Just like Glue Accelerator, Super Bonder helps shorten the curing time of eyelash extension adhesive while also maximizing lash retention. The key difference? Instead of being applied before the extension process on natural lashes, Super Bonder is used after the lash set is complete — applied directly to the base of the extensions.

Step-by-Step:

• Dispense 1–2 drops of Super Bonder onto a clean, non-porous surface.

• Dip a microfiber brush into the liquid.

• Gently apply it to the bottom 2–3 mm of the lash extensions.

• Let it air dry for 2 minutes before allowing the client to open their eyes.

Conclusion: The Ultimate Lash Retention Trio

When it comes to delivering flawless, long-lasting lash extensions, the secret lies not just in your technique but in your prep and aftercare liquids. Primer lays the foundation by cleansing and prepping natural lashes for optimal adhesion. Glue Accelerator speeds up curing during the application process, helping your fans stay open and bond faster. And Super Bonder finishes strong by sealing the adhesive, reducing fumes, and locking in retention for weeks to come.

Each product plays a unique role, but together, they form a powerful trio that elevates your lash sets from good to exceptional. If you're serious about lash retention, client comfort, and efficiency, incorporating all three into your lash routine is a must. Better hold, faster sets, happier clients—it’s a win from prep to finish.

All three lash care liquids are easy to store and remain reliably stable — regardless of temperature or humidity.