Which Lash Adhesive is the one for you?
Masterlash 5grm – Eyelash Extension Glue
Masterlash Eyelash Extension Glue 5grm, 2 – 3 second set speed
- One of our Best-selling Lash Adhesive / Glues
- Suitable for beginner/experienced lash technicians
- Ideal for new lash techs due to its slower set speed, 2 – 3 seconds
Is Masterlash Adhesive only suitable for beginner/experienced Lash Techs?
Yes, Masterlash is recommended only for beginner/experienced lash techs due to its slow set speed. (2 – 3 seconds)
What humidity & temperature is best for this lash adhesive?
Humidity 40-45% & temperature 20-25°C
We highly recommend purchasing a Hygrometer to monitor your working environment.
What is the shelf life of Masterlash?
Masterlash has a shelf life of 6 x months unopened.
Once the glue has been opened, we recommend it be used within approximately 8 – 12 weeks, if stored upright in a cool, dry place away from direct sunlight.
This can vary due to extreme heatwave temperatures & if stored incorrectly.
We recommend using a Sharpie permanent marker to write the date your Masterlash was opened on the glue bottle to keep track of when you will need to re-order.
Why is my Masterlash clear & not black?
Masterlash will need to be shaken vigorously to mix the glue ingredients.
The black pigment can sometimes separate in storage/transit.
Once Masterlash has been shaken, this will solve this issue.
Is Masterlash for professional use only?
Yes, Masterlash is only suitable for qualified, professional lash techs.
How should I store my Masterlash?
Store your Masterlash in an upright position, in a cool, dry place.
Always clean your Masterlash nozzle after use.
Always make sure the Masterlash lid is secure before shaking.
Why has my Masterlash become thick or stringy?
Here are a few factors why your Masterlash may have become thick or stringy:
Your Masterlash has not been stored correctly.
Your lid has not been replaced securely.
Your glue could have expired (please check the opening date)
Always wipe your glue nozzle with a clean, lint-free wipe.
NEVER use fibrous materials like cotton wool pads, tissues, etc., to clean your Extreme Lash nozzle, as these materials can cause a chemical reaction with Cyanoacrylate/based lash adhesives, which can cause a flammability risk.
Gently squeeze any excess residue out of the glue nozzle to prevent any blockages.
DO NOT use wet wipes, as this can cause moisture to get inside the glue bottle.
Why has my Masterlash been leaving a white residue?
Shock polymerisation is the reason why this can happen, which is caused by too much exposure to moisture.
This can be caused by clients having watery eyes during lash application.
Why are my volume fans closing up during the application?
Volume fans have a different lash application technique; rather than coating & bonding the eyelash extensions as you would for a Classic lash application, instead we would recommend using a ‘dipping method’.
We would dip the base of the volume fan into the Masterlash, making sure you have not overloaded the base, causing the Masterlash to seep up the eyelash extension, closing the volume fan.
Is Masterlash suitable for sensitive clients?
No, Masterlash contains the active ingredient Ethyl/Cyanoacrylate, which is the backbone of any professional fast-setting lash adhesives, which can cause allergic reactions & sensitivity.
Patch testing is recommended a minimum of 24/48 hours pre-lash application. This is an insurance requirement!
How to professionally remove Masterlash & eyelash extensions safely?
We recommend using a professional eyelash adhesive remover, such as Lash Off Gel Remover.
This product is designed to work with Masterlash to breakdown & dissolve the lash adhesive bonds.
This allows you to remove any lash adhesive & eyelash extensions without causing any damage to the client’s natural lashes.
This Lash Off Gel Remover can also be used for contra-actions during your lash application (e.g. spillages in other areas).
Is Masterlash vegan-friendly?
Yes, Masterlash is vegan-friendly, latex-free & NOT tested on animals.
- Please ensure you patch test your clients 48 hours in advance of a lash treatment
- For best results, we recommend gently shaking the lash adhesive before use
- We recommend using a glue dot & jade stone & replenishing your adhesive every 5-6 minutes to keep fresh
- Please note all of our 5grm lash adhesives have the same 3-month shelf life once opened & stored correctly
- 6 months shelf-life unopened when stored correctly.
- We also recommend storing upright in a Storage Container
- Masterlash works best in room temperatures of 20 – 25 degrees & humidity between 40-45%
- This product is an ISO medical-approved eyelash adhesive
- Suitable for professional use only
- This glue is manufactured in the EU to our specifications
- Contains: Cyanoacrylate
- Vegan Friendly & Latex-free
- Not tested on animals
- Colour: Black
- Viscosity: Super-fine
- Formaldehyde Free
- Water-resistant
- Heat–resistant
- This product is manufactured in the UK & ISO-approved.
- Its super-fine viscosity provides a strong lash bond & lash longevity!
This glue is only suitable for intermediate or experienced lash technicians.
Masterlash is suitable for the following lash techniques:
- Classic – Individual Lashes/Eyelash Extensions
- Cashmere Flat Lashes – Lashes/eyelash extensions
For BEST results, we recommend following our lash-prepping & lash-bonding routine;
Troubleshooting – Hints & Tips…
To get the best out of your eyelash extension adhesive/lash glue:
- We recommend making a note of the date you opened your glue, so you know when to re-order
- Apply a sticker with the date the glue was opened & stick it on the glue bottle
- Use a Jade Stone & Glue Dots rather than a Glue Ring
- Replenish your lash adhesive approximately every 5-10 minutes, depending on the humidity & temperature of your workspace
- Replenishing your glue frequently will ensure better workability & less waste
- Shake eyelash adhesive/glue well before use; sometimes the pigment can separate in transit
- Make sure your lashes are all prepped & cleaned using our Brow & Lash Wash before the eyelash extension application
- Ensure you have applied the correct lash curl, weight & length
- Apply the eyelash extensions 0.5 to 1mm away from the lash line
- Finally, do NOT apply eyelash extensions any longer than a 3rd to 1/2 longer than the natural lashes
Lash techs also bought these lash products to ensure the best results:
KG Lash Supplies is one of the top professional eyelash extension suppliers in the UK…
Years of experience in the eyelash extension industry, offering the highest quality eyelash extension supplies.
Including: Lash Glues | Lash Adhesives | Lash Removers | Eyelash Extensions | Lash Lifting | Brow Lamination | Lash Tweezers | Eye gel pads, etc.
Our Professional Customers Include:
Professional Beauty Salons | Beauty Schools | Lash Techs | Mobile Beauty Therapists
KG Lash Supplies also offers:
ABT Accredited Lash & Brow courses
Excellent 5-star-rated customer service
Great Value, Professional Lash Products!


















karen –
LOVE LOVE this lash adhesive it giving such lash longevity & is so easy to work with. Super quick set speed clients just love it too.
Ellevisage Beauty –
Master Lash is my second go-to Lash Adhesive if my clients find FAST LASH a little strong. This adhesive still offers great lash retention just a little slower set speed.
Amy (verified owner) –
Love master lash. So easy to work with