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Home > Beauty > Lash Serums Tested And Ranked
I Tested 11 Lash Serums for a Year. The Cheapest One Won.
Eleven tubes, $612, and twelve months of nightly use. The surprise was not which one worked. It was how many of them would not take the tube back once I had opened it.
By Tessa Lindqvist, Beauty Editor
Updated Sep 2026
6,047 Views | 8 min read
Stop reading lash serum reviews written by people who were sent the tube. I paid for all eleven of these myself, $612 in total, and used every one of them nightly. This is the unsponsored version.
Hello. I have been writing about beauty and everyday skincare for eleven years.
Let me start where most of these articles will not.
A lash serum asks you for three months before it proves anything , which is a long time to be wrong about something you are putting next to your eye. So the question I ended up caring about was not which one grows lashes. It was which brands would still be standing behind the tube in week ten.
I read labels. Slowly.
And what I found in the small print was worse than anything in the formulas once I started checking the refund pages too. Sealed-tube-only returns. Fourteen day windows. One brand that wanted seven dated photographs of my own eyelashes before it would consider a refund.
Here is the part that genuinely annoyed me:
Most of the headline percentages on these pages come from “consumer panels” of about thirty people, and the brands print them at the same size as a clinical result.
A friend who does lash extensions for a living asked whether the tube I was on was peptide-based or built on a prostaglandin analog. I had no idea. I had done what most people do, which is buy the best-reviewed thing on Amazon.
$24, two weeks of nightly use, and a lash line that was pink by the third morning.
That sent me to the ingredient lists, and then to the refund policies, and the second list turned out to be more revealing than the first. One brand publishes a page promising ninety days back, and a second page stating that all beauty sales are final and that anything bought in a promotion cannot be returned at all.
Both pages are live on the same website.
One year, eleven tubes, and a spreadsheet I did not expect to need. Here is what it cost me to learn the expensive way.
Five serums were worth finishing. And the one that won was also, by some distance, the cheapest of them.
What I Would Check Before Spending Another $60 on a Lash Serum
Before I get to the one that won, here are the three things I now check first, and how often this category fails all three:
What Is Actually In It
If the work is hidden behind “proprietary complex” or “lash bond technology,” put it back. Every serum I ranked prints its full list. The ones that do not are hiding either a prostaglandin or the fact that there is very little in the tube.
What The Percentage Is Built On
A serum can advertise 97% longer lashes on the strength of thirty two people filling in a form. One of the five below does exactly that, and says so in a footnote you have to go looking for. A number without a sample size next to it is marketing, not evidence.
What Happens If It Does Nothing
A serum is useless if your lids are sore by the third night and you quit long before it has had a chance to work. Lashes turn over slowly, so comfort on sensitive eyes matters as much as the actives do.
🏆 CLEAR WINNER
1. ForChics ForLash Eyelash Enhancing Serum (Best Overall)
Rating
9.7/10
THE ONLY ONE HERE THAT PUBLISHES ITS NUMBERS AND STILL TAKES THE TUBE BACK IF THEY DO NOT HOLD
I came to this one already annoyed. Two serums earlier I had learned to read an ingredient list properly, and the habit stuck. ForLash is a four-peptide formula, Myristoyl Pentapeptide-4 among them, with biotin and Panax ginseng, and nothing in the prostaglandin family anywhere on the label. That is the only reason it got near my eye at all.
It is also one of the few here that puts figures on the page and tells you when they were measured: 87% saw visibly longer lashes by week 8, 79% saw a fuller-looking lash line by week 12, and 94% reported no stinging or irritation. Dates attached to numbers is a low bar. Most of this category does not clear it.
The first fortnight was uneventful in the way you want it to be. Nothing stung, nothing watered, and I never woke up with that tight, papery feeling along the lid that made me abandon the last tube.
One dip covers both eyes and it is dry in about a minute, so it slotted in before I brushed my teeth and I stopped thinking about it.
Week seven was when my husband asked whether I had done something different, which is a more reliable instrument than my own bathroom mirror at eleven at night.
By the twelfth week the outer corners, the part of my lash line that had thinned first and bothered me most, had filled back in enough to see in daylight. The hydrolyzed and soluble collagen is what smooths each lash, and the sea daffodil, peony root and schizophyllan blend is the part doing the work on the lid itself.
Behind it sit 5,549 verified reviews averaging 4.9 out of 5 and more than 800,000 purchases, and the formula is made in a K-GMP certified facility.
The part that decided it for me was the return policy, and I want to be blunt about why. Three of the four serums I ranked below this will not refund a tube once you have opened it. ForChics gives you sixty days and takes it back half-used. Only one product here asks you to risk nothing, and it is the cheapest of the five.
It is the only tube in this test I have bought twice without weighing it up first.
Nothing else here managed dated results, a calm lid and a price under thirty dollars at the same time.
There is no ramp-up period. One stroke nightly for twelve weeks, then three or four nights a week to keep it.
It will not beat a fifteen dollar marketplace listing on price, and it does not try to.
If you want something you can use every night without your eyes objecting, and you want a way out if it does nothing, this is where I would start. It is the only one on this list I would pay full price for.
The bottom line: one tube is $26.99 at forchics.com, down from $39.99, and the multi-bottle tiers step the price down through $20.24 and $16.49 to $14.62 a bottle. Vegan, fragrance-free, hormone-free and free of prostaglandins, and safe alongside contact lenses, extensions and mascara.
PROS
A four-peptide complex with biotin and Panax ginseng
No prostaglandin analogs and no hormones
87% saw visibly longer lashes by week 8
Designed for sensitive eyes, 94% reported no irritation
Safe with contact lenses and lash extensions
60-day money-back guarantee, even half-empty
CONS
Twelve weeks of nightly use before the full result
Sold direct by the brand, not on shop shelves
The $14.62 price needs a multi-bottle order
Heads up: The bundle pricing is a running promotion rather than a fixed rate. If the tiers are live when you read this, they are where the real saving sits.
VISIT SITE
2. Sweed Pro Eyelash Serum
Rating
8.8/10
Sweed is the one here that publishes its whole formula and still has awards behind it.
See how Sweed compares.
Sweed is the one here that publishes its whole formula and still has awards behind it.
See how Sweed compares.
Sweed runs four peptides rather than the usual two: Myristoyl Pentapeptide-17 and Pentapeptide-16, Biotinoyl Tripeptide-1 and Octapeptide-2, with hydrolyzed keratin, hyaluronic acid and panthenol sitting behind them. The whole ingredient list is printed on the product page where anyone can check it, which I wish were less rare here.
There is no prostaglandin in it and Sweed says so outright instead of leaving you to decode the label. Its customers rate it 4.7 out of 5 across more than 1,500 reviews, and it took a 2026 Oprah Daily award and a Who What Wear best-serum pick, which is more outside recognition than anything else in this group.
Two things hold it at second. The headline figures, 97% longer and 94% fuller, come from a panel of thirty two women, not a trial, and Sweed says so in its own footnote. The bigger issue is what happens if it does nothing for you. There is no guarantee. Returns run fourteen days and only on a sealed tube, so the moment you open it you own it, at $65 for 3ml or $90 for 5ml.
PROS
Four named peptides, no prostaglandins
Whole ingredient list published openly
4.7 out of 5 from more than 1,500 reviews
Award wins from Oprah Daily and Who What Wear
CONS
No guarantee of any kind, on any size
Returns are 14 days and sealed tubes only
Headline results rest on a panel of 32
$65 for 3ml, $90 for 5ml
Its “99% of lash serums” line has no source
Results framed as appearance, never measured
3. Lash Therapy Australia Eyelash Serum
Rating
8.4/10
Lash Therapy keeps its list short enough to read in one breath: water, hyaluronic acid, pumpkin seed extract, collagen, biotin, Myristoyl Pentapeptide-17 and arginine. Seven things. An Australian brand now shipping into the States out of Texas, and dermatologist-tested.
No hormones and no prostaglandins, and it has the second-largest customer base in this group at 4.6 out of 5 across 2,711 reviews. It also words its claims as lashes that look longer rather than lashes that grow, which is the more honest way to put it.
Then you read the small print. The 93% and 90% it quotes come from thirty participants, with no journal and no institution named, and the page itself cannot keep the numbers straight: 93% appears against the longer-lash figure in one place and 90% in another, while the review count is variously 2,711, 2,713, 7,000 and 10,000. Returns are thirty days, unopened only, and you pay the postage, even though the page markup advertises free returns.
PROS
A seven-ingredient list, printed in full
Hormone-free and prostaglandin-free
4.6 out of 5 across 2,711 reviews
Claims worded honestly as appearance, not growth
CONS
No guarantee, and opened tubes cannot go back
$64.95 for one 3ml tube, no bundles
Its results data comes from 30 participants
Its own numbers disagree across one page
If you are weighing up a serum with no refund, the guarantee is worth more than the claims.
See the winner.
If you are weighing up a serum with no refund, the guarantee is worth more than the claims.
See the winner.
If you are weighing up a serum with no refund, the guarantee is worth more than the claims.
See the winner.
If you are weighing up a serum with no refund, the guarantee is worth more than the claims.
See the winner.
4. Rodan + Fields Lash Boost
Rating
8.0/10
Of the five serums here, Lash Boost is the one most likely to give you a change other people notice. That comes down to isopropyl cloprostenate, a synthetic prostaglandin analog that sits ahead of every peptide on the ingredient list. The brand states it plainly on its own page: "This cosmetic product contains isopropyl cloprostenate, a synthetic prostaglandin analog. See WARNINGS."
It has the biggest review base in this comparison by a wide margin, 4.62 out of 5 from 11,825 reviews, an 8-week study behind its 90% fuller and 85% longer figures, and a real 60-day money-back guarantee. If you want the strongest possible result and you have read the label properly, it is a defensible choice.
What keeps it at fourth is the price of that result. Rodan + Fields lists the possibilities itself: redness and itching, dry or watering eyes, styes, inflamed eyelids, temporary darkening of the skin around the eye, lash loss, hair growing where you did not want it, and, reported to the company, iris discoloration, drooping lids and meibomian gland dysfunction. It rules out anyone pregnant, nursing or being treated for glaucoma or cancer, and adds that the product has had 8-week testing but no long-term testing at all. At $155 for 5ml that lasts about two months, it is also four times the cost of the winner.
PROS
The largest review base here, 11,825 reviews
An actual 8-week study behind its numbers
A real 60-day money-back guarantee
CONS
Contains isopropyl cloprostenate, a prostaglandin analog
Brand lists iris discoloration and lash loss as risks
Brand states there is no long-term testing
$155 for 5ml, about two months of use
5. Infinite Beautye Lash & Brow Serum
Rating
7.4/10
Infinite Beautye sells a 5ml tube at $47, and almost nobody pays that, because the whole page is built around buy two get one free and buy three get one free. Take the bundle and it lands near $27 a tube, the cheapest per unit of the four challengers here. The listing calls it a lash serum while the pack itself reads lash and brow, and one applicator is meant to do both.
The formula is not the problem. It publishes a full list with three named peptides, Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16 and Biotinoyl Tripeptide-3, over sunflower, meadowfoam, rice bran and safflower oils, and there is no prostaglandin anywhere in it.
The problem is everything around the formula. Its numbers carry no citation at all: a 99% success rate and 76% growth in three weeks are credited to independent clinical studies that are never named. The page cannot settle on how long results take either, promising seven days in one place, twenty days in another, then three weeks, four to six weeks, and a gallery captioned week 1 to week 12. It shows 5.0 out of 5 from 67 reviews with not a single review below five stars. And the refund position contradicts itself: one policy offers ninety days back if you use it daily and submit seven dated photos, on days 1, 15, 30, 45, 60, 75 and 90, while another states that all beauty sales are final, that serums cannot be returned, and that anything bought in a promotion is excluded, which is how the bundles are sold.
PROS
Around $27 a tube on the bundle, the cheapest here
Publishes a full list with three named peptides
One applicator covers lashes and brows
CONS
Its results claims name no study at all
Two refund policies that contradict each other
A refund needs seven dated progress photos
5.0 from 67 reviews, none below five stars
The One I Would Buy Again Tomorrow
I have now paid for eleven of these. I bought tubes with no ingredient list, a $155 one whose own label warns it can change the color of your iris, and several that were happy to take my money and then decline a refund the moment the seal was broken.
While you're reading this, someone else is:
Buying a prostaglandin analog without noticing it on the label.
Paying $65 for a tube that cannot be returned once it is opened.
Giving up in week three, a month before anything would have shown.
You don't have to be any of them.
Used every single night, a peptide serum works with the lash cycle you already have rather than forcing it with a hormone analog. That is what ForLash is: four named peptides, a lid that stays calm, and a company that will refund the tube if none of it happens. That is how you stop starting over every eight weeks and actually stay with one long enough to judge it.
You get the four-peptide complex, biotin and Panax ginseng, no prostaglandins and no hormones, for $26.99 a tube.
Of everything I tested, it is the only one that was both the cheapest on the list and the one most willing to be wrong about itself.
Why didn't I just start here?
VISIT SITE
Information on this site is provided for general informational purposes only. Rankings and opinions reflect the author's own experience across a year of nightly testing, alongside each brand's published ingredient lists, results data and refund terms.
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