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Patch Test for Lash Extensions: A Comprehensive Guide

April 27, 2023 5 min read

Patch Test for Lash Extensions: A Comprehensive Guide

  As a lash stylist, it's essential to prioritize your client's safety and comfort during the lash extension application process. Allergic reactions can be a significant risk, and knowing how to perform a patch test is crucial to minimize this risk. 

  In this article, we are gonna give you the low-down on patch tests. You'll find a comprehensive, easy-to-follow guide on how to do them, and get answers to some common questions. It's great knowledge for beginner lash stylists to ensure a safe and comfortable experience for their clients.



Conducting a Patch Test for Eyelash Extensions: Step-by-Step Guide



1. Plan in Advance

   To ensure your client's safety and avoid any allergic reactions, it's important to arrange a patch test at least 24 hours before the actual appointment. This gives enough time for the adhesive to cure, which usually takes about 4 hours.


  In fact, you can utilize this appointment as a comprehensive consultation – an opportunity to understand your client's preferred style and develop a customized lash map for them. Furthermore, you can have your client complete a consent form and educate them on proper aftercare techniques!


2. The Extension Application Method

When conducting a patch test, we suggest a straightforward approach of applying around 10 to 12 lash extensions to the outer corners of your client's eyes. This approach is the most reliable since it mimics the exposure of a full set of lash extensions, although with reduced volume.


By applying only 10 to 12 extensions to the outer corners of your client's eyes, you minimize the risk of potential reactions. This targeted approach makes it easier to manage any adverse effects, while still providing a reliable indication of your client's tolerance to the adhesive


3. Adhesive on Lashes

  Instead of applying a dab of adhesive on the outer corner lashes, it is recommend to use a minimal number of extensions, around 10 to 12, for the patch test. This approach is more reliable as it replicates the exposure of a full set of lash extensions, with reduced volume.


  Additionally, since the extensions are located far from the tear duct, it becomes easier to manage any potential reactions that may occur during the patch test.


Also, keep in mind that this method leaves some glue on the client's lashes beforehand, which may not be the best for their lash health. However, it could work in a pinch when there's no time to apply a few extensions before the patch test.



4. Adhesive on Skin 

Another way some lash artists do a patch test is by applying a tiny drop of adhesive to the client's skin, usually behind the ear where it can't be seen. However, I wouldn’t recommend this method because it's not as dependable as other techniques.


Remember that just because a client's skin can tolerate adhesive applied to one part of their body, it doesn't necessarily mean it will be safe for the delicate skin around their eyes. It's important to consider that eyelid skin is thinner and more sensitive compared to other areas, and may react differently to the adhesive.



5. Testing Multiple Adhesives

  If your client has sensitive skin or eyes, it's important to test multiple adhesives. You can try dye-free or low-cyanoacrylate options if available. Test one adhesive on one eye and a different one on the other eye, and remember to keep track of which adhesive is which.

  Lyon Lash Super Sensitive Glueis the solution for people with sensitive skin or eyes. This latex-free adhesive has the LOWEST possible cyanoacrylate, yet it still allows fast adhesion after placement that it cures within 1-2 seconds.



6. Managing a Reaction 

  You should always instruct your clients to return to the salon for immediate removal in case of any adverse reactions to the adhesive. This is important to prevent further discomfort or potential damage to their natural lashes. Additionally, make sure to provide aftercare instructions and advise them to consult with a medical professional if the symptoms persist or worsen.


  Reactions from a patch test are usually not severe, and you can advise your client to use a cold compress or eye drops to relieve any discomfort until the symptoms disappear. However, if the reaction is severe or persists, it may be necessary for them to seek medical attention.


  If your client only experienced mild irritation during the patch test, you could suggest trying a different adhesive in the future, as long as the client agrees. However, if the client had an allergic reaction, it's unlikely to go away completely and may be a lifelong issue for them.

Identifying an Eyelash Extension Patch Test Reaction


  In terms of reactions to eyelash extensions, there are typically two types: allergies (also known as allergic contact dermatitis) and irritations (also known as irritant contact dermatitis).


  It can be hard to tell the difference between an allergic and an irritant reaction. Both can cause red and watery eyes, as well as redness, swelling, or flakiness of the surrounding skin. Your client may feel uncomfortable with symptoms like stinging, itchiness, or pain.


 An allergic reaction is more severe and often indicates that your client cannot have lash extensions in the future. This type of reaction can occur immediately or several hours after the application. The most notable sign of an allergic reaction is swelling of the eyelid and the skin beneath the eye.



  When a person experiences irritation from lash extensions, the symptoms usually appear immediately and can be caused by either the fumes from the adhesive or direct contact of the adhesive with the skin. Fortunately, removing the lashes and adhesive can help alleviate the irritation.


  Additionally, it's crucial to consider the reaction's location, especially if it's primarily under the eyes. Sometimes, clients may not react to the lash extension adhesive but instead to the glue used in under-eye patches or medical tape during the process. Therefore, it's important to assess all possible factors that could have caused the reaction.

Commonly Asked Questions:


Q: Where can I perform the patch test?

A:We recommend conducting the patch test on the outer corner of the lash line. Testing on the skin behind the ear or on the wrist is possible but less reliable.



Q: When should I conduct the patch test?

A:Arrange the patch test at least 24 hours before the lash extensions appointment.



Q: Is an eyelash extension patch test form necessary?

A: Yes! For legal purposes, a proper consent form should be signed before performing any eyelash extension service.



Q: How long does an eyelash patch test take?

A:A patch test typically takes around 15 minutes from start to finish, although it may take slightly longer if combined with a full consultation. After conducting the test, wait at least 24 hours to ensure no issues arise before proceeding with the lash extensions.




  To sum it up, doing a patch test before eyelash extension application is crucial to guarantee the well-being and satisfaction of your clients. By adhering to the proper guidelines, lash technicians can decrease the likelihood of negative responses and improve the quality of their services.


  Timing the patch test correctly and distinguishing between allergic reactions and irritations are crucial factors. Don't forget to keep accurate records and prioritize your clients' safety to deliver outstanding service in the field of eyelash extensions.

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