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Eyelash Serum
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Water/Aqua, Hydroxyethylcellulose, Glycerin, Panthenol, Hydrolyzed Soy Protein, Butylene Glycol, Carbomer Polysorbate20, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Sodium Hyaluronate, Soluble Collagen, Dehydrolatanoprost, Hydrolyzed Wheat Protein PG-Propyl Silanetriol, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin
We offer FREE worldwide shipping*! After you place your order, you will receive an email order confirmation. Once the product ships, UPS will email you your tracking number. Expect your tube of fLASH to arrive in 5-7 business days for US orders and 7-14 days for international.
*We are shipping from the U.S. Some orders may take up to four weeks depending on your location, and we cannot be responsible for fees or customs charges levied by your country.









fLASH EYELASH SERUM
IN A
An award-winning, affordable serum that ACTUALLY works. Try it for yourself and become obsessed.
EYELASH SERUM
Ophthalmologist tested, safe
for both sensitive eyes and
contact lens wearers.
Applied like a liquid eyeliner during
your morning routine (it's like
skincare for your eyelashes)!
Our formula is packed with hair
healthy ingredients that nourish and
condition the lash follicle.
fLASH Eyelash Serum comes with a full 90-day Happiness Guarantee or your money back!*
*fLASH Eyelash Serum (2mL) only.
Experience your longest, curled lashes with our innovative Ultimate Lash Duo 2.0.
Pair with these fLASH favs for the ultimate lash enhancement.
Overall rating: 4.8 / 5 from 138 reviews.
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Nora S. 5/5 Verified
I had very thin and spars eyelashes, within 1 week i saw the difference & i will definitely take more pics and videos of it.
Claudia L. 5/5 Verified
Me encanta, yo nunca había tenido las pestañas largas jamás en mi vida, lo amo mi novio lo usa y el también ha tenido un cambio impresionante. Lo recomiendo siempre mis primos ya lo compraron es que es increíble!
Paula C. 5/5 Verified
Been using consistently for two months. I no longer have little gaps between my lashes and they are so much fuller! The retention has been amazing, with minimal lash fallout. I will wait for them to get a little longer before I do a Korean Lash Lift. Love this product!!
Crystal A. 5/5 Verified
I LOVEE this lash serum, it made my lashes grow in less than 1 month. The price is most definitely worth it.
Jhoana A. 5/5 Verified
1000000% ⭐️⭐️⭐️⭐️⭐️⭐️
Laura I. 5/5 Verified
Muy bueno
Sarahi G. 5/5
I never write reviews but I had to do it with this one! I’ve been struggling with my lashes for so long! I barely had any and they were getting lighter I don’t know why. You can see it in my before picture. This lash serum changed my life! I never had lashes this full and thick! I’ve been using it for 4 months. Thank you Flash Lash!
Laura 5/5
Sin rímel, la verdad si me crecieron bastante pero mi genética no es de cabello abundante, me crecieron pero no hay más volumen pero me gustaron los resultados
Michelle M. 5/5
La experiencia fue increíble, i love it
Andrea L. 5/5 Verified
My eyelashes have grown too long!!!!!! I love it.
Maria Del Sol P. 5/5 Verified
I had no lashes at all, I really can see they’re longer! The only thing is that using flash got me dark circles 🫣
Zay R. 4/5 Verified
I love Flash Eyelash Serum!!! It's an essential product for me.
Blanca F. 5/5 Verified
Estoy sorprendida de los resultados , me encanta
Vincenzo L. 5/5 Verified
It took me like a month to see a big difference on my lashes but it was so worth it 10/10 recommend
Daniela B. 5/5 Verified
Me encanta Lo aplico en mis pestañas y mis cejas y he visto muy buenos resultados
Rosario T. 5/5 Verified
Love this product!! It makes my eyelashes look longer and thicker so I don't have to use as much makeup on my eyes. It really makes them grow too, people think I have fake eyelashes
Estela R. 5/5 Verified
Mis pestañas empezaron a crecer demasiadoooo!
Maria Jose P. 5/5
Mis pestañas eran súper pequeñas llevo dos compras del mismo producto me duran aprox 2 meses usándolo dos veces a la semana y lo amo
Alejandra I. 5/5 Verified
Buena
Daniela S. 5/5 Verified
Me recupero muchos espacios que tenía en 2 meses
Shirley C. 5/5 Verified
Judge for yourselves, it's the best I loveeeeed
Maria J. 5/5 Verified
I love them.
Natasha H. 5/5 Verified
I love this serum, I started seeing results after 2 months and since 2021 I've been using it and I really enjoy it.
Sandra G. 5/5 Verified
It exceeded my expectations! Super effective! My eyelashes were too short and in 4 weeks boom 💥 I love them! 😍 I am 100% satisfied with the product! Super recommended!⭐️⭐️⭐️⭐️⭐️
Edith A. 5/5 Verified
From non existant lashes to lovely long lashes. At 70 years old this is wonderful
Christine B. 5/5 Verified
Realmente funciona , empezaré apenas con mi segundo bote
Maria J. 5/5 Verified
Best eye serum hands down
Rania S. 5/5 Verified
Ame! Probé otras marcas de serum, pero Flash hizo un gran cambio en la longitud, y eso que antes no tenía casi nada, es mi 2do tubo y volveré a adquirirlo!
Ximena R. 5/5 Verified
Llego úsandolo desde diciembre y estado sorprendida con el resultado
Carla G M. 4/5 Verified
I used this lash serum 2 months and my lashes grew so fast an longe, i love it and want to use it for a long time. In the fotos you can see how my lashes look today and for 2 months ago
Luna M. 5/5 Verified
En mi parpado izquierdo NO tenia pestanas y en el derecho estan un poco mas largas no risadas pero es muy buen producto
Carmen Elena R. 5/5 Verified
Amazed
Karen C. 5/5 Verified
I love it!!!
Despoina L. 5/5 Verified
Love it it’s work for me my lashes grow longer than before.
Sandeep D. 5/5 Verified
Best serum I’ve ever used, the only serum that will work on my lashes. They’re thicker.. longer and there’s more lashes than ever. Also it doesn’t hurt to use everyday which is a bonus. They’re so long and beautiful! Thank you !!
Ellie W. 5/5 Verified
El Mejor 😍❤️
Camila C. 5/5 Verified
I’ve always worn strip lashes or lash extensions because I had the shortest eyelashes that you couldn’t even tell I had any. This product is truly a game changer. I couldn’t be happier with my lashes! I am in love with them !!! This product truly works, just be patient and consistent and you will see results. I never imagined I would stop wearing strip lashes or getting extensions. I love this product so much!
Judith C. 5/5
After 2 months of using the serum, I’m constantly asked where I get my “eyelash extensions” from! Thanks for making me fabulous Flash!!😘
Lexie W. 5/5 Verified
So great I recommend it to all my friends. I’ve tried many eyelash growing solutions including the ordinary Serum and castor oil. But nothing grew it as well as this serum! I also posted a video in which the results are visible on my tiktok which now has over 4.6 million views! Everyone that comes across Flash eyelash serum loves it!
Gabby M. 5/5