5 Retention Killers That Every Lash Artist Needs To Know

What's causing your problems with lash retention? How do you get good retention?

Retention killers for lash extensions — let's talk about them. Have you been struggling to find answers to your retention problems and seen other lash artists struggle with their retention? Chances are, retention is not just the luck of the draw.

The first thing that pops into your head when you hear the word is probably "I want it!". But if you haven't noticed, there's a big difference between wanting something and knowing how to get it. Are you having trouble with retention? If so, keep reading. You might be asking yourself what could be causing your retention issues when you've used the same process each time.

5 Retention Killers That Every Lash Artist Needs To Know


New to lash photo editing? We've got you covered with our Free Lash Editing Tutorial. Click here to learn more!


Who wants to earn a reputation as the lash artist who doesn't keep her clients or the one who causes her clients to get lash extensions again, days later?! NOT ME! With that said, I wanted to educate myself on some of the retention killers for lash extensions that I need to be aware of – and maybe you do too. I've heard things like poor isolation, daily mascara use, and hormonal changes as top concerns when it comes to causing retention problems during and after lash service.

If you're looking for lash tips on making your client's eyelashes last longer, read on for some handy tips.



You see it all the time. Clients arrive with lashes that look like they just ran a marathon. Some even have mascara! As you probably know, lashes don't stick to dirty lashes! So what can you do about this? Before applying eyelash extensions, carefully cleaning the lashes with a lash shampoo is the best thing you can do. Doing this ensures that no oil particles around the eyes could cause trouble when lashing.

Clean Eyelashes Every Time Before Applying Extensions

Lash Shampoo Foam and Disposable Eye Lash Brush are used in this set. To shop, please click here.


If you're a lash artist and you have clients with extremely oily skin, you have probably encountered the issue where the eyelash extensions start falling off right after the first day. So you might want to use a primer for that type of client.

Lash retention is the term used to describe how well lashes stay on your client's eyes. When a client returns for her refill appointment, you want her to be able to see that they haven't fallen out. The more lashes you have on a client, the better. However, not all lash artists have the same level of retention. Some lose 1-2 lashes a week, while others can lose up to 40.


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.



If you're like some lash artists, you haven't given it any thought. Maybe you don't even have a way to measure your environment. But it's important because different humidity/temperatures can affect the adhesion bond.

Lash glue temperature and humidity

Gel Under Eye Patches, Collagen Lip Mask, Pro-made Organized FansVelour Lash Adhesive and Lash Glue Tile used in this set. To shop, please click here.


If you are a lash artist and do not measure your environment, you will have a bad time. If the humidity is too low, you need to get a humidifier, and if it is too high, you need to get a dehumidifier. The humidity may occasionally be outside the ideal range because we have no control over the situation. So you need two types of adhesive, one that dries more quickly and one that dries more slowly.


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.



Some lash artists choose the wrong drying time for their speed. The dry time you select will also have an impact on your retention. If you use glue that dries in two or one seconds and works too quickly or slowly, the lashes may not adhere correctly.

Choosing the Right Eyelash Adhesive

Disposable Glue Cup, Ultra Crystal Clear Bond and YY Volume Lashes used here. To shop, please click here.


When you apply an extension, and the glue is almost dry, but you chose a too-short dry time, it will stick when you dip it and apply it to the extension. However, when your client goes home later that afternoon or the following day and combs her lashes, the curing process begins, and the lashes will start to fall out.

Therefore, be aware of the glue dry time you use so that it matches your speed. Many factors can influence retention, but the key is to experiment; if one option doesn't work, invite them back and try the next. Because every client is different, you should give yourself enough time to identify these factors.


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.



Make sure you select the appropriate curl for the client's natural lashes. This will help them blend in better and look more natural.

What's the best curl for eyelash extensions

Lashes, Color Lashes, Ultra Crystal Clear Bond, Incredible Retention Primer and Super Bonder used in this set. To shop, please click here.


If a client's lashes are naturally straight, you should choose a cc or c curl because cc is a relatively universal curl. It would be helpful if you tried to keep straight lashes with a straighter curl and curly lashes with a curlier curl because adding a D curl to someone with straight lashes can significantly negatively impact their retention. This could affect your retention and be one of the reasons why your clients are experiencing a lot of fallout.


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.



Their retention may be negatively impacted if you apply a lash extension too heavy for their natural lash to support. Examine your client's natural lashes to see if they are healthy, damaged, gappy, or just a little brittle, and then decide which lash style is ideal for them.

Lash sizes and thickness

Pro-made Fans, Glitter Galaxy Collection, Ultra Crystal Clear Bond and Half Moon Lash Mirror used in this set. To shop, please click here.


When a 0.18 lash is applied to someone with fragile, weak lashes, there will be a lot of fallout because the extension is too hefty and will cause their lashes to fall out. So while choosing the set, make sure to take into account the state of their natural lashes.


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.


Lash Retention Explained: Understanding Low and High Porosity

When it comes to lash extensions, achieving optimal retention is crucial. Many factors contribute to lash retention issues, but one of the most significant is the condition of the hair cuticle. Understanding the concept of porosity and how it affects lash adhesion is essential for lash artists. In this blog post, we'll delve into the world of low and high porosity, shedding light on why it matters and how to address it effectively.

Lash Retention Explained Understanding Low and High Porosity


Unveiling the Cuticle

Picture the hair shaft as a layered structure, with the outermost layer known as the cuticle. The cuticle can open or close, depending on internal and external factors. For lash extensions to hold securely, we want the cuticle to be slightly open, creating a surface for the glue to cling to. However, this is where the magic glue theory falls short – no adhesive can fix everything if the cuticle is resistant to opening.


Low Porosity: Closed Doors

Low porosity hair refers to a condition where the cuticle is tightly closed, making it difficult for adhesives to penetrate. If a client has low porosity lashes, we need to address this issue to ensure long-lasting lash extensions. Fortunately, the solution lies in using an appropriate primer with a higher pH than the natural lash. By doing so, we can open up the cuticle, raising the pH level and increasing porosity, allowing the glue to penetrate and adhere effectively.


High Porosity: Embracing Texture

On the other end of the spectrum, high porosity hair offers an abundance of texture to work with. In this case, the cuticle is naturally more open, which can be advantageous for lash extension application. If a client has high porosity lashes, there is no need to correct the open cuticle. Instead, we can capitalize on this characteristic to achieve strong adhesion. Choosing the right primer and adhesive formulated for high porosity hair will ensure a secure bond between the natural lash and the extension.



As lash artists, understanding the concept of porosity and its impact on lash retention is crucial. The condition of the hair cuticle plays a significant role in the success of lash extensions. Low porosity, characterized by a closed cuticle, requires the use of a primer with a higher pH to open up the cuticle and increase porosity. In contrast, high porosity hair, with its naturally open cuticle, provides a favorable environment for lash adhesion. By tailoring our approach to match the client's porosity level, we can achieve optimal lash retention and client satisfaction.


Remember, the key to successful lash retention lies in comprehending and addressing porosity levels. So, the next time you encounter a client with different porosity needs, you'll be well-equipped to provide the best lash extension experience possible.



When it comes to your lash clients, the saying "prevention is better than cure" has never been more accurate. Losing a client over lash retention issues will not only hurt your bottom line, but it will also make you feel terrible as a professional. Whatever you do, please do not lose that client. Treat their lashes with the utmost care. This means practicing active listening and eliminating any environment where you could leave her with the "top retention killers."

I want everyone to know a few things that happen during the application process. If you eliminate these from your lash extension application, you'll quickly find that you'll have the best retention results and happy clients!

If you're a lash artist, you know that retention is an important part of the job. After all, the client will return to you every two weeks for fills. If your client doesn't come back, it's not just a missed sale but also lost revenue. Building a clientele and a reputation might take months and years, respectively.


Do you find this blog post helpful? Have you learned something? Leave a comment below and share your thoughts. Don’t forget to share this blog with your lash friend.


Be sure to follow ThousandLashes on our social media - FacebookInstagramPinterest and YouTube for helpful lash tips and tricks. 


Anyone needing lash support or lash tips and tricks? Thousandlashes Lash Talk for Beginner Lash Artists will always be open for the kind of support that you will be needing on this lash journey. 


For more tips like this one be sure to subscribe to our email list, we send very informative and helpful emails every week, please click here.



If you want to learn and create a beautiful set of wispy lashes. We have a FREE Training Ebook just for you, please click here.

*Grab your FREE Training Ebook on wispy lashes now! ( limited time only )


To purchase lash products, check out our website. SHOP NOW

ThousandLashes team will do our best to service you with our high-quality products and best service.




Best Lash Extension Styles For Different Eye Shapes: If you're unsure which lash or style will make the eyes of your clients pop in the best way possible, check out this handy guide.

How To Crystallized Lash Fan And Why It Is Better: I'll teach you how to crystallize lash fans and why you should do it.

Why Every Lash Artist Needs A Lash Bed Cover: You must keep your tools in amazing shape if you want your clients to be happy and if you want to provide them with a premium experience. Here’s how in this blog.

1 comment

  • Jamie Maund

    How can you tell if a lash is low or high porosity?

Leave a comment