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  • STEP 5: Retention & Speed Booster

    If you are facing retention problems or find that your eyelash extensions are not sticking as they should, it is not always the glue. Retention and Speed Booster is an essential product for every professional kit, designed to improve the bond and increase your working speed. This versatile booster works with any adhesive to ensure your fans stay open and your placements are instant.

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    📦 Order by 3pm (Mon–Fri) for same-day dispatch.

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    Key benefits
    • Improves retention by creating an instant, stronger bond
    • Keeps volume fans open for fuller, more defined sets
    • Speeds up application with faster, easier placement
    • Prevents adhesive from travelling, reducing stickies and poor bonds
    • Works with any glue to upgrade performance across every set
    Is this product right for me?

    Who is the Retention and Speed Booster for? 

    This product is a must-have for professional lash artists of all levels. It is particularly beneficial for Russian Volume artists who want to prevent their fans from closing and for any technician looking to speed up their treatment time.

     

    What is the Retention and Speed Booster? 

    It is a high performance solution that acts as a primer for the extensions themselves. It helps the adhesive grip the natural lash instantly and prevents the glue from travelling up the fibre, which is the main cause of closed lash fans.

     

    When Should You Use It? 

    Use this booster during any set where you want to increase your efficiency and ensure a magnetic attachment. It is incredibly cost-effective, as a 15ml bottle provides enough product for approximately 150 to 200 clients.

     

    Why choose this Booster? 

    Because it saves time and boosts client satisfaction. By ensuring the lashes are easier to place and grip immediately, you can reduce your application time. It also helps to maintain the perfect shape of your volume fans, leading to a much fuller and more professional finish.

     

    To get the most out of your booster, follow these professional steps:

    • Preparation: Apply a small amount of the product onto a micro brush.
    • Application to the Strip: Run the brush along the base of the extensions while they are still on the strip in the box or on your lash palette.
    • Consistency: This prevents the fans from closing during the fanning process and prepares the fibers for the adhesive.
    Description

    The Retention and Speed Booster is a vegan and cruelty-free formula designed for maximum workability in a professional salon environment.

    • Primary Benefits: Improves retention and prevents fans from closing
    • Adhesive Compatibility: Works with any professional lash adhesive
    • Shelf Life: 18 months (unopened); 3 months (opened)
    • Capacity: Available in 15ml bottles and 2ml sample sizes
    • Suitability: Not for use on Easy Fanning lashes, as it can affect their specific adhesive bond
    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.

     

    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. 

     

    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 40 reviews
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    R
    Riikka
    Riikka

    It’s working 👌

    Hi Riikka,

    Thank you so much for your review of Booster! We're so happy to hear it's working perfectly for you

    LLP x

    T
    Thanh Dat Nguyen
    STEP 5: Retention & Speed Booster

    this product is game changing for my career.

    Hello,

    Love hearing this — thanks for sharing. If it’s had that kind of impact on your work, that really means a lot to us

    LLP x

    S
    Simina Juravle
    Prima 🧨

    Erfüllt seinen Zweck, ich kann ihn wärmstens empfehlen.

    Hello,

    Thank you so much for your feedback

    We’re really happy to hear that it does exactly what it’s meant to do and that you’d recommend it. Thanks for choosing London Lash — we truly appreciate your support ✨

    LLP x

    F
    Fatima Tlais

    Excellent

    Thank you so much for the love! We’re thrilled to hear you’ve had an excellent experience – that’s exactly what we aim for every time ✨

    With love,
    LLP

    S
    Sabina
    With his help I have a high retention of 3-4 weeks.

    I am satisfied with this product, plus it has a pleasant smell that my customers like, it also gives me a high strength of 3-4 weeks.

    Hi Sabina !

    Thank you so much for taking the time to leave us a review! We truly appreciate it

    LLP x