Your Most Common Questions about LASH Serums, Answered.
If you’ve been thinking about adding a lash enhancing serum to your beauty routine, consider this your sign. We’re answering five of the most common questions about lash serums—specifically our LASH Follicle Fortifying Serum.
This award winning formula has earned a cult following for a reason. It’s transformed countless routines—and even more lashes. But with any product, especially one that delivers such dramatic results, there are plenty of questions. How does it work? Will it irritate my eyes? Is it really worth it?
So, in celebration of National Lash Day this month, we’re breaking it all down. Here’s everything you’ve ever wanted to know about achieving longer, fuller looking lashes—with confidence.
1. How does LASH Serum work?
We love diving into the science behind this stunningly effective formula. Our LASH Follicle Fortifying Serum is powered by exclusive Elastaplex® Technology, designed to support all stages of the natural lash growth cycle. It features a proprietary blend of biodesigned signal peptides and proteins—including elastin and keratin—that promote visibly strong and longer looking lashes.
At the heart of our formula is elastin, the protein that anchors hair at the root. At around age 25, the body’s natural elastin production begins to decline and the effects gradually become visible–think thinning lashes and increased fallout.
Elastin loss weakens the Elastin Root™ System, the foundation of every follicle. Over time, this can cause lashes to become more fragile and sparse. By replenishing elastin with LASH Serum, you can help restore your lashes to their youthful looking glory.
Applied twice daily, the nourishing formula doesn’t just support natural renewal—it visibly boosts lash resilience, helping them withstand daily makeup application and removal without breakage.
2. Is LASH Serum safe?
LASH Follicle Fortifying Serum is both dermatologist and ophthalmologist tested, ensuring it meets the highest standards for safety and effectiveness. Designed for top lash lines only, fans of the serum have reported its gentleness on the eyes and non irritating for glasses and contact lens wearers when used as directed.
As with all our products, LASH Serum adheres to our Safe Science Standards℠—formulated without sulfates (SLS & SLES), parabens, MI/MCI, formaldehydes and formaldehyde-releasing agents, phthalates, talc, petrolatum or mineral oil. It’s also vegan and cruelty-free—because beautiful results should never come at a compromise.
3. How long does it take to see LASH Serum results?
Results take time, but they’re absolutely worth the wait. Applying LASH Serum correctly is key—starting with clean, dry eyelids, swipe a thin line along the upper lash line morning and evening, after skincare and before makeup.
While the timeline varies based on factors like age, gender and natural lash growth cycle, many users experience that “wow” moment around 6 to 8 weeks—with even more dramatic results over time.
The best part is, once you hit that point where your lashes visibly pop, your results just keep getting better—with many customers seeing double the impact at 12 weeks. The change is drastic but gradual, so you may start to see improved visible length and fullness just a few weeks after starting. You might notice a more “feathery” texture or that your lashes are holding onto their curl and mascara better.
4. Do LASH Serum results last if you stop using it?
When it comes to LASH Serum results, consistency is key. While missing an application here and there won’t derail your progress, long term use is essential for maintaining your best lashes. If you do skip a day—or even a few—don’t stress. Simply pick up where you left off and continue as normal.
Like moisturizer or other active skincare products, LASH Serum is designed for continuous use. Maintaining results requires regular application, but once you’ve reached your dream lashes, you can reduce frequency to once daily or even 3 to 4 times per week to maintain your results.
Application takes less than 10 seconds, making it an effortless addition to your routine. A great tip is to keep it on your bedside table so you never forget to apply.
5. Can I use it if I have lash extensions?
Whether you’re taking a break from lash treatments or a continued loyalist who never misses an appointment, our LASH Serum is highly recommended.
Lash extensions can be beautiful but over time, the added weight, adhesives and harsh chemicals can weaken your natural lashes, leading to breakage, shedding and damage. LASH Serum helps fortify and nourish your lashes, creating a stronger foundation that supports recovery—so whether you’re going natural or keeping up with extensions, your lashes remain resilient.
Ready to experience NULASTIN?
Backed by science and clinically proven to enhance the look of length and fullness, LASH Follicle Fortifying Serum is designed to help you achieve stunning lashes with ease and consistency. Whether you’re new to lash serums or looking to elevate your routine, this powerhouse formula delivers visibly fuller, more resilient lashes—the ultimate essential you never knew you needed.
