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fLASH EYELASH SERUM

Eyelash Serum

Regular price
$45.00
Regular price
Sale price
$45.00
Size
INGREDIENTS

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

SHIPPING INFORMATION

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.

Eyelash serum with applicator and packaging for longer, fuller, curled lashes
Woman with long lashes holding eyelash serum, close-up on lashes and cosmetic product
Woman with curly hair and long lashes making a fish face, eyelash serum application steps shown.
Eyelash serum tube with text highlighting safe, easy, and effective benefits for fuller lashes.
Close-up before and after of one eye showing longer, fuller eyelashes after serum use
Eyelash serum product packaging with applicator and six week supply box, pink and teal design
Two fLASH eyelash serum boxes, 3-month and 6-week supply, on white background
Clear eyelash serum tube with turquoise accent, labeled for lash growth, on white background
fLASH EYELASH SERUM

Trust Badges

  • Pink paraben-free trust badge with stylized face icon, cosmetic safety symbol
  • Pink trust badge with line art eye and text indicating suitable for sensitive eyes
  • Cruelty-free badge with white bunny icon on pink background
  • Pink badge with US flag icon and text stating Made in the USA
  • Vegan badge with white bowl and leaves icon on pink circle background
Flash Logo

LONG,
CURLED
LASHES

IN A

An award-winning, affordable serum that ACTUALLY works. Try it for yourself and become obsessed.

Before and after comparison showing natural lashes and longer, fuller-looking eyelashes.
Clear eyelash serum tube with teal accent and visible 'FLASH EYELASH SERUM' label

SAFE

Ophthalmologist tested, safe
for both sensitive eyes and
contact lens wearers.

EASY

Applied like a liquid eyeliner during
your morning routine (it's like
skincare for your eyelashes)!

EFFECTIVE

Our formula is packed with hair
healthy ingredients that nourish and
condition the lash follicle.

Smiling woman with long, full eyelashes and curly red hair on a white background.
Flash Logo

HAPPINESS
GUARANTEE

fLASH Eyelash Serum comes with a full 90-day Happiness Guarantee or your money back!*

*fLASH Eyelash Serum (2mL) only.

Flash Logo

ULTIMATE
LASH DUO 2.0

Experience your longest, curled lashes with our innovative Ultimate Lash Duo 2.0.

ONE SYSTEM, TWO STEPS.

YOU'LL ALSO LOVE

Pair with these fLASH favs for the ultimate lash enhancement.

fLASH EYELASH SERUM

Eyelash Serum

$24.00

fLASH HAPPY HIGH-DEFINITION MASCARA

Waterproof Mascara for Eyelashes

$18.00

REAL RESULTS, IRL

Shop THE FEED @flashcosmeticsus

REVIEWS

Customer Reviews

Overall rating: 4.8 / 5 from 131 reviews.

Customer photo review of fLASH EYELASH SERUM

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!!

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

I LOVEE this lash serum, it made my lashes grow in less than 1 month. The price is most definitely worth it.

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

1000000% ⭐️⭐️⭐️⭐️⭐️⭐️

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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!

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

My eyelashes have grown too long!!!!!! I love it.

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

I had no lashes at all, I really can see they’re longer! The only thing is that using flash got me dark circles 🫣

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

I love Flash Eyelash Serum!!! It's an essential product for me.

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Estoy sorprendida de los resultados , me encanta

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

It took me like a month to see a big difference on my lashes but it was so worth it 10/10 recommend

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Me encanta Lo aplico en mis pestañas y mis cejas y he visto muy buenos resultados

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Mis pestañas empezaron a crecer demasiadoooo!

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Me recupero muchos espacios que tenía en 2 meses

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Judge for yourselves, it's the best I loveeeeed

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

I love this serum, I started seeing results after 2 months and since 2021 I've been using it and I really enjoy it.

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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!⭐️⭐️⭐️⭐️⭐️

fLASH EYELASH SERUM

Customer video review of fLASH EYELASH SERUM

From non existant lashes to lovely long lashes. At 70 years old this is wonderful

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Realmente funciona , empezaré apenas con mi segundo bote

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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!

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

Llego úsandolo desde diciembre y estado sorprendida con el resultado

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

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

fLASH EYELASH SERUM

Customer photo review of fLASH EYELASH SERUM

En mi parpado izquierdo NO tenia pestanas y en el derecho estan un poco mas largas no risadas pero es muy buen producto

fLASH EYELASH SERUM

Customer photo review of fLASH Eyelash Serum

Love it it’s work for me my lashes grow longer than before.

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

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 !!

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

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!

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

After 2 months of using the serum, I’m constantly asked where I get my “eyelash extensions” from! Thanks for making me fabulous Flash!!😘

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

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!

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

Tengo las pestañas más largas y rizadas aunque en la foto no están peinadas por eso se concentran más en algunas zonas.

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

I’m shocked by the results fLASH gave my lashes! After a few months of consistent use, my lashes are a lot longer and stronger.

fLASH Eyelash Serum

Customer photo review of fLASH Eyelash Serum

This product is by far my favorite! I’ve been using it over 6 months and my lashes are growing dramatically!

fLASH Eyelash Serum