Lash Retention Booster & Superbonder

Improve lash retention and streamline your application routine with professional lash retention products from London Lash. Explore lash Booster, Superbonder, cleansers, primers and treatment bundles designed to support stronger bonds, consistent application and longer-lasting lash-extension sets.

Use our Retention & Speed Booster during application to help keep volume fans open and support extension pickup, or finish the completed set with Superbonder Sealant to increase bond flexibility and complete your professional retention routine.

Lash Retention Products Compared

Product Type	Primary Purpose	Application Stage	Applied To
Foam cleanser	Removes makeup, oil and surface buildup	Before pretreatment	Natural lashes and eye area
Professional cleanser	Deep cleans the natural lash surface	During pretreatment	Natural lashes
Lash primer	Rehydrates and prepares cleansed lashes for bonding	After cleanser and before application	Natural lashes
Retention & Speed Booster	Helps prevent fan closure and supports faster extension grip	During application	Base of the extensions while they remain on the strip or palette
Superbonder	Increases adhesive flexibility and seals residual fumes	After the completed treatment	Adhesive bonding points
Professional lash adhesive	Creates the bond between the extension and natural lash	During application	Base of the lash extension

What Is Lash Retention?

Lash retention describes how securely eyelash extensions remain attached to the natural lashes between appointments. Good retention should allow extensions to remain attached until the natural lashes reach the appropriate stage of their growth cycle and shed naturally.

Retention is influenced by several connected factors, including:

The cleanliness and condition of the natural lashes
The pretreatment products and technique used
The amount and condition of the lash adhesive
The salon’s temperature and humidity
Placement and the size of the adhesive bonding area
The weight of the extension or fan
The client’s natural lash-growth cycle
How consistently the client follows their aftercare routine

A retention product can support your application system, but it cannot compensate for incomplete cleansing, unsuitable adhesive conditions, poor placement or extensions that are too heavy for the natural lash.

What Is London Lash Retention & Speed Booster?

London Lash Retention & Speed Booster is a professional application product designed to help volume fans remain open and provide a faster initial grip between the extension and natural lash.

The product is applied sparingly to the base of the extensions while they are still on the strip or lash palette. It should not be applied directly to the client’s natural lashes.

Booster helps prevent adhesive from travelling too far up the extension fibers, which can cause a handmade volume fan to close. This can make fan pickup, placement and attachment more controlled during volume and hybrid treatments.

What Is Bond Boost for Lashes?

“Bond boost” is commonly used as a search term for a professional product intended to support the adhesive bond or improve lash retention. At London Lash, the relevant product is the Retention & Speed Booster.

Rather than replacing lash adhesive, Booster supports the application process. It is applied to the extension strip before pickup and is designed to help the extension grip the natural lash more quickly while keeping handmade volume fans open.

What Is Lash Superbonder?

Superbonder is a professional finishing product used after the lash-extension treatment is complete. It works at a different stage from Retention & Speed Booster.

Superbonder is designed to increase the flexibility of the cured adhesive bond. A more flexible bond is better able to move with the natural lash, helping to reduce premature breakage where the adhesive is rigid or brittle.

It also seals residual adhesive fumes and allows the extensions to get wet immediately after the appointment when applied correctly. Follow the product instructions for the precise application method and timing.

Booster vs Superbonder

Feature	Retention & Speed Booster	Superbonder
When it is used	During lash application	After the set is complete
Where it is applied	To the base of extensions on the strip or palette	To the completed adhesive bonding points
Primary purpose	Supports faster grip and prevents handmade fans from closing	Increases bond flexibility and seals residual fumes
Suitable for natural lashes	No	Applied only to the adhesive bonding area
Replaces adhesive	No	No
Can they be used together?	Yes, because they support different stages of the professional treatment

How to Use Lash Retention & Speed Booster

Complete the appropriate natural-lash cleansing and pretreatment routine.
Dispense a small amount of Booster onto a clean surface.
Use a clean microfiber applicator to apply a small amount to the base of the extensions.
Apply it while the extensions remain on their strip or lash palette.
Allow the product to dry before picking up and applying the extensions.
Continue the treatment using your selected professional lash adhesive.

Do not apply Booster directly to the client’s natural lashes. It should also not be used on Easy Fanning lashes because it can react with the adhesive already used within the Easy Fan strip and make the fibers difficult to manipulate.

How to Improve Lash Retention

Clean the Natural Lashes Thoroughly

Begin with an appropriate lash shampoo or foam cleanser to remove eye makeup, skincare residue, oils and surface buildup. Visible cleanliness does not always mean the lash surface is free from microscopic residue, so follow a consistent professional lash pretreatment routine.

Use Cleanser and Primer Correctly

Professional cleanser and primer perform different functions. Cleanser removes oils and residue from the natural lashes, while primer restores appropriate moisture and prepares the cleansed lash surface for bonding.

Apply each product sparingly and allow the lashes to reach the condition specified by the product instructions before beginning application.

Match the Adhesive to Your Environment

Different adhesives perform within different temperature and humidity ranges. Monitor your treatment environment and select an appropriate product from the London Lash glue collection.

An adhesive that cures too quickly may polymerize before a secure bond has formed. An adhesive that cures too slowly may allow extensions to move, lean or stick to neighboring lashes.

Refresh the Adhesive Drop Regularly

Replace your adhesive drop when it becomes stringy, develops a skin, changes consistency or no longer performs predictably. The required frequency will depend on the adhesive and treatment environment.

Create a Suitable Bonding Area

Place each extension with sufficient contact against the natural lash while keeping the required distance from the skin. The extension should not be attached at only one small point or placed so that its base lifts away from the natural lash.

Choose an Appropriate Extension Weight

Match the diameter, length and fan size to the strength of the individual natural lash. Excessive weight may affect both retention and natural-lash health.

Explain Lash Aftercare

Clients should clean their extensions regularly with a product formulated for lash aftercare. Makeup, oil, dead skin and daily buildup can collect around the lash line and affect the condition of the extensions and natural lashes.

Direct clients to the appropriate lash aftercare products and explain how to cleanse and dry their extensions without pulling, rubbing or picking them.

Common Causes of Poor Lash Retention

Possible Cause	What to Check	Potential Improvement
Oil or residue on the lashes	Cleansing and pretreatment routine	Clean thoroughly and use the appropriate preparation products
Adhesive curing too quickly	Humidity, temperature and application speed	Use an adhesive suited to the environment and working speed
Adhesive curing too slowly	Environmental conditions and adhesive selection	Adjust conditions or choose a more suitable adhesive
Small attachment area	Placement and extension direction	Create sufficient contact between the extension and natural lash
Rigid adhesive bonds	Finishing routine and adhesive behavior	Consider a professional finishing product such as Superbonder
Volume fans closing	Adhesive movement and fanning technique	Use Booster on suitable extension strips and review adhesive control
Extensions shedding with natural lashes attached	Natural lash-growth cycle	Explain normal shedding and schedule appropriate infills
Poor client aftercare	Cleansing, rubbing, picking and product use	Provide clear written and verbal aftercare instructions

Frequently Asked Questions

What is a lash retention booster?

A lash retention booster is a professional application product used to support extension grip and adhesive performance. London Lash Retention & Speed Booster is applied to the base of suitable extensions while they remain on the lash strip or palette.

Does lash Booster replace primer?

No. Primer is applied to prepared natural lashes before the extensions are attached. Booster is applied to the base of the extensions on the strip or palette. They perform different functions within the treatment.

Does lash Booster replace adhesive?

No. Booster supports application but does not create the primary bond. Extensions must still be applied using a suitable professional lash adhesive.

Can Booster be applied to natural lashes?

No. Retention & Speed Booster should be applied to the base of the extensions while they are still on the lash strip or palette, not directly to the natural lashes.

Can Booster be used with Easy Fanning lashes?

No. London Lash advises against using Retention & Speed Booster on Easy Fanning lashes because it can react with the adhesive within the strip and make the fibers harder to manipulate.

What is the difference between Booster and Superbonder?

Booster is used during application to help extension grip and prevent handmade volume fans from closing. Superbonder is applied after the completed treatment to increase bond flexibility and seal residual adhesive fumes.

Can Booster and Superbonder be used together?

Yes. They can form different parts of the same professional treatment because Booster supports application while Superbonder is used after the set has been completed.

Why is my client experiencing poor lash retention?

Poor retention can result from incomplete cleansing, unsuitable adhesive conditions, incorrect adhesive quantity, limited attachment area, excessive extension weight, natural shedding or poor aftercare. Review the complete treatment rather than relying on one product to resolve every issue.

How can clients improve eyelash-extension retention?

Clients should cleanse their lashes regularly with an appropriate lash cleanser, avoid pulling or picking the extensions and follow the aftercare advice provided by their lash technician. Regular professional infills are also required as the natural lashes complete their growth cycle.

Shop professional retention products above, explore the full lash-extension liquids collection, complete your routine with pretreatment products, or find an adhesive for your environment in our lash-glue collection.

Retention & Speed Boosters