0

Your Cart is Empty

Continue Shopping
Products for Better Retention
  • LASH GLUES

  • LIQUIDS

  • GLUES
  • LIQUIDS
  • LASHES
  • LASH LIFT
  • BROWS
  • PRO PRODUCTS
  • EDUCATION
  • Sale

    STEP 5: Retention & Speed Booster

    Master the art of perfect fans and unbreakable bonds with Step 5: Retention & Speed Booster. Engineered to solve the industry’s most common retention struggles, this professional essential ensures your Russian Volume fans stay perfectly open while providing an instant, magnetic grip to the natural lash.

    Customize your kit
    Visa Shop Pay Apple Pay PayPal Klarna Clearpay

    ✅ NO RISK. Love it or your money back.
    📦 Order by 3pm (Mon–Fri) for same-day dispatch.

    ×
    Key benefits
    • Speed up your application with instant adhesive grip and control
    • Keep fans perfectly open for flawless, symmetrical volume sets
    • Improve lash retention with stronger, more secure attachment
    • Reduce rework and save time with easier, more precise placement
    • Deliver consistently full, fluffy results that last between infills
    Is this product right for me?

    Who is the Retention & Speed Booster for? 

    This is an absolute must-have for professional lash technicians looking to increase their application speed and client satisfaction. Whether you are a volume specialist or a hybrid artist, this formula is the ultimate tool for a flawless workflow.

     

    What is the Retention & Speed Booster? 

    A high-performance solution that acts as a magnetic aid for your adhesive. Available in both a 15ml professional bottle and a 2ml sample size, this vegan and cruelty-free formula is compatible with any professional lash extension glue.

     

    When Should You Use the Retention & Speed Booster? 

    Apply this as Step 5 of your routine. It is designed to be used during the application process to prevent adhesive from travelling up the lash fibre, which is the leading cause of fans closing prematurely.

     

    Why Choose London Lash Booster? 

    Because your time and reputation are valuable. By making lashes easier to place and grip instantly, you significantly speed up your treatment time. It creates a more resilient bond, ensuring your fans remain wide and fluffy from the moment of application until the client’s next infill.

     

    How to achieve a faster, more precise application:

    • Application Technique: Using a microfibre brush, apply a small amount of Retention & Speed Booster directly onto the base of the lash extensions while they are still on the strip or your lash palette.
    • Precision Prep: This prevents the adhesive from travelling up the fibre during the fanning process, ensuring your Russian Volume sets remain perfectly symmetrical.
    • Cost-Efficiency: One 15ml bottle is highly concentrated, providing enough product for approximately 150 to 200 clients.
    • Important Safety Note: Do not use this product on Easy Fanning Lashes. The Booster can react with the specialised adhesive used to create Easy Fans, making them difficult to manipulate.
    Description

    The London Lash Retention & Speed Booster is a technical powerhouse designed to provide consistent results in varying salon environments. It empowers you to work with confidence, knowing every fan is locked in place.

    • Capacity: 15ml (Standard) or 2ml (Sample)
    • Key Benefits: Improves retention, prevents fan closure, and increases work speed
    • Compatibility: Works seamlessly with any professional lash adhesive
    • Shelf Life: 18 months (unopened), 3 months (once opened)
    • Ethics: 100% Vegan and Cruelty-Free
    • Yield: Approximately 150–200 treatments per 15ml bottle
    • Professional Use Only: Not for use on Easy Fanning ranges
    FAQs

    How should my clients wash their lashes?

    It is always best to recommend to your clients to use a professional product that has been designed and tested to be in contact with the gentle eye area. Our Lash Foam Shampoo has been tested and approved to be used together with eyelash extensions, it removes makeup and prepares lashes for the application. Additionally, it will clean the lashes by removing any oil, sweat and makeup build-up which will help to keep the lashes on longer. 

    Baby Shampoo or other products not made specifically for the eye area or lash extensions, in particular, should not be used on the eye area, and quite often can actually cause dryness or irritation on the delicate skin around the eyes.

    If your client has sensitive skin or a known allergy to Tea Tree, we would recommend the In Lei Delicate Foaming Shampoo range instead.

    Our digital aftercare leaflets have been designed to educate your clients on the correct aftercare procedure. You can purchase our digital aftercare leaflets for your clients here.

    My client's lashes are clean but I still have problems with retention, why?

    If you are experiencing retention issues make sure to check if you follow all the steps of pre-treatment correctly. Very often lashes that seem ‘clean’ are not thoroughly cleaned and may be causing retention issues. Make sure to always follow a full pre-treatment routine and refer to our glue section to check if you follow all recommendations for the correct work with the adhesive. 

    Find out more on how to slay a full pre-treatment routine

    Lastly, make sure that your client is also following the lash aftercare as this may also have an impact on the retention.

    What is the difference between booster and superbonder?

    Retention & Speed Booster is designed to be applied only to the lash extension strip (not the client’s natural lashes). Its purpose is to speed up curing, prevent glue from running up the fibre, and stop fans from closing during fanning, making Russian Volume application faster and easier while supporting better retention. It works with any adhesive but must NOT be used with Easy Fanning lashes.

    Superbonder adds elasticity to the adhesive. The additional flexibility ensures the bonds don't break as easily, therefore resulting in better retention. Superbonder instantly polymerises the glue, without shock curing. It locks in the fumes from the adhesive and with the fumes contained, irritation and sensitivity are significantly reduced. Additionally, because the bonds have been sealed, the lashes are instantly safe to get wet. So no more waiting 24 hours after the treatment!

    What is the difference between cleanser and primer?

    London Lash Cleanser is an alcohol-based product that is used to de-moisturise natural lashes and removes any oils and proteins from their surface. London Lash Primer is a water-based product that is used to moisturise natural lashes and neutralise pH levels to improve the bonding between the natural lashes and the extensions.

    It is not recommended to use Cleanser without the Primer. This is because the Cleanser is very drying on the lashes, and without moisture, the lash glue will not be able to cure. The Primer must be used after cleansing, as it puts moisture back into the lashes after the high alcohol content of the Cleanser.

    For an extra touch of luxury, why not go for one of our scented Cleansers and Primers? It’s such a little thing, but a slight waft of Cherry or Coconut can take your client’s experience from an 8 to a solid 10!

    What is your recommended pre-treatment routine for the best retention?

    How you complete your pretreatment has as much of an effect on the retention of the lashes as the glue you use. It can be the difference between 2 weeks of retention, and 5 weeks of retention, so it is very important to get it right - lash retention is client retention, after all!

    The very first step should always be makeup removal. You can either give your client a lash bath with a Lash Foam Cleanser to wash their lashes or you can hand them the foaming cleanser so they can wash their lashes themselves in the bathroom. 

    After removing all makeup, follow the next pretreatment steps to ensure natural lashes are well prepared:

    • Step 1: Use Protein Remover Pads - If there are some remnants of mascara, makeup, oils or sebum build-up around the lashes, the protein remover pads will do an excellent job at ensuring all final traces of unwanted oils are removed.

    • Step 2: Use Cleanser - Cleanser has a high alcohol content which gets rid of EVERYTHING - any oils, any residue from foam cleanser that might be left, any little tiny traces of makeup will be gone. 

    • Step 3: Use Primer - It is a MUST to use Primer after Cleanser because it puts moisture back into the lashes after the high alcohol content of the Cleanser which can be drying. It gets those lashes ready to have extensions placed on them like nothing else.

    • Step 4: Booster! - Retention & Speed Booster is designed to be applied only to the lash extension strip (not the client’s natural lashes). Its purpose is to speed up curing, prevent glue from running up the fibre, and stop fans from closing during fanning, making Russian Volume application faster and easier while supporting better retention. It works with any adhesive but must NOT be used with Easy Fanning lashes.

    Ta-da! Now you’re ready to go. Get that map drawn and slay some lashes! 

    Can I use only a cleanser to prepare lashes?

     

    We always recommend completing all steps of pre-treatment in order to increase retention and ensure that lashes are super clean. We also would not recommend using a lash Cleanser without following with a lash Primer. This is because lash Cleansers have high alcohol content in order to completely remove any oil residue on the lashes, which can be very drying to the natural lashes. You will need to follow with a lash Primer in order to replace that lost moisture so that the lash glue has some moisture in order to dry. Without some moisture, the lash glue may be drying too slow for you, or not at all! 

    Properties
    Cruelty-free Vegan
    Reviews

    Customer Reviews

    Based on 69 reviews
    91%
    (63)
    4%
    (3)
    1%
    (1)
    0%
    (0)
    3%
    (2)
    L
    Lydia Ellam
    Magic in a bottle

    Introducing this into my lash prep was the best thing I did. Amazing retention & quicker lash application, couldn't be without it now

    Hi Lydia!

    Thank you so much for your wonderful review! We’re thrilled to hear that the Booster has made such a difference in your lash prep — improving retention and speeding up application! 🙌.

    - LLP X

    E
    El
    Couldn’t be without it

    Helps speeds up lashing and prevents my fans from closing - works perfectly with other products

    Hi Ellie!

    Thank you so much for your wonderful review! We’re thrilled to hear that the Booster is helping speed up your lashing and keeping your fans perfect 😍✨. It’s great to know it works so well with your other products too!

    - LLP X

    S
    Shonte Anderson
    Amazing for retention!

    Booster helps to improve my lash retention after primer so much!

    Thanks for the great feedback, Shonte! We’re thrilled the Booster is helping boost your lash retention, it’s made to do just that! ✨🙌

    – LLP X