Product data checked October 2026 · 10 serums tested

The lash serum ranking that reads the ingredient label first.

We test every serum for 12 weeks, score it on efficacy, safety, value and formula, and flag every prostaglandin analog. No sponsored placements — ever.

See the 2026 ranking Compare all 10 serums

Close-up of a closed eye with long, full natural lashes

10serums ranked

12 wktest protocol per serum

4weighted scoring pillars

0paid placements

Product data correction

Updated formula: QUALASH Advanced

The Advanced formula contains Ethyl Tafluprostamide. Its previous recommendation and score are withdrawn pending reassessment.

LashCompare is reader-supported. When you buy through links on our site we may earn an affiliate commission at no extra cost to you. Commissions never influence rankings — see our methodology and disclosure.

Price, size and photo sources · checked October 9, 2026

USD regular one-time prices for the specified size, excluding shipping, tax, coupons and subscriptions. Prices can change. Historical editorial scores were not re-tested in this data audit; QUALASH scores are withdrawn pending reassessment.

QUALASH Advanced Eyelash Growth Serum: $56.00 / 3.5 ml. US storefront, USD; one bottle. Advanced contains Ethyl Tafluprostamide. Do not confuse it with Activating.
Vegamour GRO Lash Serum: $68.00 / 3 ml. One-time purchase $68; subscription $57. 3 ml shown on product packaging.
The Ordinary Multi-Peptide Lash & Brow Serum: $14.90 / 5 ml. One 5 ml tube, regular US price.
Latisse (bimatoprost 0.03%): Price varies / 5 ml. 5 ml confirmed; also sold in 3 ml kits. No single verified retail price; ask your prescriber/pharmacy. The former $140/month claim was removed.
GrandeLASH-MD Lash Enhancing Serum: $68.00 / 2 ml. 2 ml $68; 4 ml $125; 1 ml $36. Comparison uses 2 ml.
RevitaLash Advanced Eyelash Conditioner: $152.00 / 3.5 ml. 3.5 ml $152; 2 ml $100; 1 ml $59. Comparison uses 3.5 ml.
RapidLash Eyelash Enhancing Serum: $34.95 / 3 ml. $34.95 / 3 ml. Availability differs between visible page and product feed; confirm at checkout.
Rodan + Fields Lash Boost: $155.00 / 5 ml. Regular $155 / 5 ml; page also displayed $124 promotional price. Codes and subscription offers excluded.
LASHFOOD Phyto-Medic Eyelash Enhancer: $78.00 / 3 ml. $78 / 3 ml. Use the 3 month supply, not the travel-size product.
Babe Original Essential Lash Serum: $89.00 / 4 ml. Regular 4 ml $89 (observed sale $66.75); 2 ml $49 (sale $36.75); 1 ml $29 (sale $21.75).

QUALASH

QUALASH Advanced Eyelash Growth Serum

Editorial reassessment pendingProstaglandin analogVeganProstaglandin analog + peptides

The current Advanced formula lists Ethyl Tafluprostamide. The former prostaglandin-free classification was incorrect. Its previous score and best-overall recommendation are withdrawn pending editorial reassessment. The US storefront lists one 3.5 ml bottle at $56.

Active: Ethyl Tafluprostamide, Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16, botanicals · Size: 3.5 ml · Results: 3–4 weeks first changes; 8–12 weeks full

Pros

3.5 ml bottle
Vegan according to the manufacturer
Published ingredient list

Cons

Contains Ethyl Tafluprostamide, a prostaglandin analog
Previous safety and value scores require reassessment

—/10

LashCompare score

$56.00 · $16.00/ml

Check price

Score withdrawn pending reassessment

See how it stacks up. Full breakdown of all 10 serums, with sub-scores and cost per ml.

Read the full ranking

Quick picks

The top 5 at a glance

Scores out of 10. Tap any serum for the full review, pros and cons.

01QUALASH Advanced
Editorial reassessment pending · $56.00—02Vegamour GRO
Best vegan pick · $68.008.9 03The Ordinary Multi-Peptide
Best budget · $14.908.6 04Latisse
Strongest clinical evidence · Price varies8.4 05GrandeLASH-MD
Fastest OTC results · $68.008.1

Why trust us

Ranked on evidence, not hype

Ingredient audit first

Every INCI list is checked for prostaglandin analogs, hormones and undisclosed actives before we test anything.

12-week protocol

Same applicator technique, same photo setup, same lighting — measured at weeks 0, 4, 8 and 12.

Weighted scoring

Efficacy 35%, safety 30%, value 20%, formula quality 15%. Rankings are re-run every quarter.

Affiliate-independent

Commissions don't touch the score. Brands can't pay to be listed, moved or removed.

Read our full methodology →

Know your actives

Two very different kinds of lash serum

The ingredient that makes a serum work also decides its risk profile. Here's the one distinction every shopper should understand.

Prostaglandin analogs

Bimatoprost (Rx), isopropyl cloprostenate, ethylcloprostenolamide and similar. Fastest, most dramatic length — and the ingredient class behind reports of lid darkening, iris color change and fat loss around the eye.

Which serums contain them →

Peptides & botanicals

Myristoyl pentapeptide-17, biotinoyl tripeptide-1, acetyl tetrapeptide-3, other peptide complexes. Gentler, slower, and focused on conditioning, anchoring and extending the growth phase.

How peptides work →

From the blog

Guides & explainers

All articles

Safety8 min read

Prostaglandin Lash Serum Side Effects: What the FDA Warnings Actually Mean

Eyelid darkening, sunken eyes, iris color change — here's what the research says about prostaglandin-analog lash serums, which products contain them, and how to spot one.

Science7 min read

Peptide vs. Prostaglandin Lash Serums: How Each One Actually Works

The two lash serum mechanisms compared — speed, results, side effects, cost and who each is right for — with the evidence behind both.

Guides6 min read

How Long Does a Lash Serum Take to Work? A Realistic Week-by-Week Timeline

Week-by-week expectations for lash serum results — when shedding slows, when length shows, when to judge a serum, and why 12 weeks is the fair test.

Frequently asked questions

What is the best lash serum in 2026?

The previous QUALASH recommendation is under reassessment after an ingredient correction. Compare the verified sizes, regular prices and current ingredient classifications below.

Do lash serums actually work?

Yes — but how well depends on the active ingredient. Prescription bimatoprost (Latisse) has clinical-trial evidence; over-the-counter prostaglandin analogs work similarly but carry the same side-effect profile; peptide serums condition, reduce breakage and support the growth phase for a gentler, slower result.

How long does a lash serum take to work?

Most people notice less shedding by week 3–4 and visible length or fullness between week 8 and 12. Lashes grow on a 6–10 week cycle, so a fair trial is at least 12 weeks.

Are prostaglandin lash serums safe?

They are effective but linked to reported side effects including eyelid darkening, redness, dryness, periorbital fat loss and — rarely — permanent iris pigmentation. Health Canada restricts them in cosmetics and the FDA has issued warning letters. We flag every analog-based product in our ranking.