The Quick Take
Quick summary: The Ordinary Multi-Peptide Lash & Brow Serum scores 8.2/10 under our editorial rubric. Its main appeal is the low price. Our dated ingredient-label review found no covered prostaglandin analogue names, and our three-person panel reported modest visible changes. Neither fact proves efficacy or safety.
This three-person panel is the product-specific subgroup for this review within the broader 25+ tester-input program described on our homepage. It does not mean 25+ people tested this product.
The formula lists several peptides and conditioning ingredients at a low price. Published studies have tested finished multi-ingredient serums, not this product's individual peptides in isolation.
At the price captured for this review, it was the lowest-cost product in our rankings. Whether it is worth trying depends on the label, application experience, and evidence limits below, not on a promise that it will work.
Because this formula is marketed for both lashes and brows, we also evaluate it against our eyebrow growth serum criteria. If you are using it on overplucked areas, read our brow regrowth timeline first, then use our thicker eyebrows guide for cosmetic fullness while you wait.
Review Snapshot
| Review factor | What our review found |
|---|---|
| Overall score | 8.2/10 |
| Formula status | no covered analogue names found on the dated label reviewed |
| Primary appeal | the lowest price in our lash serum rankings |
| Main caveat | small panel and no controlled product study reviewed |
| Price and size | $14.90 / 5mL |
| Expected timeline | panel observations began around weeks 8-10; not a promised timeline |
| Evidence checked | Ingredient list, scoring rubric, user-review patterns, and category comparisons |
"At $15, I expected nothing and got pleasantly surprised. No, it's not going to give you the dramatic results of a $90 serum. But for someone on a budget who wants to dip their toe into lash serums, this is a genuinely smart buy. I noticed my lashes looked a bit more defined after about 8 weeks - not longer, really, but healthier and slightly thicker."
✓ What We Liked
- Unbeatable price at $14.90
- Multi-peptide formula from a trusted brand (DECIEM)
- Marketed for both lashes and brows
- Reviewed label did not list covered prostaglandin analogue names
- Widely available at Sephora, Ulta, and online
✗ What Could Be Better
- Small panel cannot establish an expected result or timeline
- Applicator brush is floppy and imprecise
- Formula can feel watery and drip
- No controlled head-to-head evidence reviewed
Key Ingredients
Ingredient Snapshot
Names on the reviewed label and the limits of our product evidence.
→ Read our complete Ingredient Guide to understand every ingredient
Our Full Review
The DECIEM Approach to Lash Growth
The dated label we reviewed lists biotinoyl tripeptide-1, myristoyl pentapeptide-17, acetyl tetrapeptide-3, caffeine, and panthenol. Our dated ingredient-label review found no covered prostaglandin analogue names. Formula labels can change, so check the package you receive.
Peptides are small chains of amino acids. A 2020 study tested a finished multi-ingredient serum: 29 people completed 90 days, and average lash length rose 10.52%. The study received a SkinGen International research grant. A 2024 study tested another finished formula: 30 people completed 12 weeks, and average lash length rose 8.3%; authors disclosed ties to Cantabria Labs. Neither study used a look-alike control serum, and neither tested The Ordinary's formula.
No controlled human study reviewed here shows that Myristoyl Pentapeptide-17 alone grows lashes. The studies cannot show that one peptide caused the changes, that this serum will match those results, or that peptide serums work as well as bimatoprost. This does not prove the formula is irritation-free, safe during pregnancy, or effective.
Our Testing Experience
Let's start with the applicator, because it's the weakest element of this product. The brush is soft and flexible to the point of floppiness, making precise lash line application challenging. The serum has a thin, watery consistency that can run if you're not careful. We found the best technique was to apply with the face tilted slightly back, using very small amounts.
Our small, uncontrolled three-person panel first reported modest visible changes around weeks 9-10. Testers described slightly longer- and fuller-looking lashes. This panel had no control serum, blinding, or clinical examiner and cannot support a reliable comparison with another product.
No tester reported irritation during our 12-week panel. This is a small, uncontrolled three-person panel. It is not a 0% clinical sensitivity rate and cannot predict every user's reaction.
The Unbeatable Price Point
At the $14.90 price captured for this review, a 5 mL bottle lasting about two months costs roughly $7.45 per month. That was less than half the estimated monthly cost of the next prostaglandin-free serum in our budget ranking. Prices and use rates can change.
Who The Ordinary Is Best For
The Ordinary may suit shoppers comparing a low price, a label without the covered analogue names, and a thin formula. That label screen does not prove the product is gentle, safe, or effective for a particular person.
Week-by-Week Panel Observations
Here is what our three testers observed. We do not have controlled product evidence showing which ingredient caused a change, how this formula compares with prostaglandin formulas, or whether any change is more sustainable.
The Ordinary Across 12 Weeks
What three testers reported and measured. This was not a controlled study.
Weeks 1-2: No tester reported a visible lash change. Testers noticed a light film and described lashes as slightly less brittle. No tester reported irritation, tingling, or redness during this period.
Weeks 3-4: No clear visual difference was recorded. One tester thought her lashes looked glossier but noted that expectation or lighting could explain the impression. We cannot tell from this panel what any ingredient was doing at the follicle.
Weeks 5-8: Two testers reported fewer lashes on cotton pads around week 6. By week 8, testers described slightly more filled-in lash lines. These subjective observations do not prove reduced fallout or increased density.
Weeks 9-12: All three testers described healthier- and somewhat longer-looking lashes. Panel measurements ranged from about 0.5 to 1 mm of additional length. We did not establish reduced breakage, a plateau, or maintenance after week 12.
This timeline describes three experiences only. It does not prove a typical onset, comparative speed, absence of side effects, or what happens after missed days or discontinuation.
Application Experience
The Ordinary uses a thin, flexible brush applicator that sits inside the tube. The brush itself is about 1cm long with soft bristles - think of a very small lip gloss wand, but thinner. On paper, this design should work. In practice, the brush is too flexible and the bristles too soft to give you precise control along the lash line.
The formula is watery and thin, closer to the consistency of micellar water than a serum. When you pull the brush out of the tube, it often carries more product than you need, and the liquid can migrate down the bristles and drip if you are not careful. We found the best approach was to wipe the brush lightly against the tube opening to remove excess, then apply in a single, deliberate stroke along the upper lash line with the face tilted slightly back.
Our panel recorded a dry time of roughly 30-60 seconds and did not report stinging, tingling, or burning. That small observation does not prove universal comfort. We tested night and morning application; follow the current product directions and stop if irritation develops.
One practical note: the 5mL tube does not have a click-stop mechanism, so the brush pulls out freely. This makes it easy to accidentally dispense too much product. You need very little per application - a light coating on each upper lash line is sufficient.
Value Analysis
At the $14.90 price captured for this review, a 5 mL tube lasting an estimated 8-9 weeks works out to about $0.24 per day or $7.25 per month. It was the lowest price in our rankings at review time. A lower financial cost does not remove the possibility of irritation or prove that the product will work. Check current price, size, label, and return terms before buying.
Annual Cost: The Ordinary vs Alternatives
What a year of lash growth costs across three approaches.
Archived Reader Anecdotes
Source limit: We do not publish source URLs or a verification method for these archived quotes. We exclude them from evidence conclusions, structured data, and AI-readable mirrors. Treat each as an unverified personal report.
You can't beat this price. I've been using it for 3 months and my lashes look healthier. Not dramatic growth but I'm happy.
Solid budget option. I use this as maintenance between more expensive serums. Does the job for what it costs.
The applicator is genuinely annoying - floppy and hard to control. I stuck with it for 10 weeks and saw slight improvement in fullness, but nothing I'd call transformative. Good for the price though.
Third tube now. My lashes are noticeably healthier and I've had way less breakage since I started. It won't give you falsie-level length but at this price I'm never stopping.
A common theme across Sephora and Reddit reviews is that this serum rewards patience. Multiple reviewers noted that they almost gave up around week 6 before seeing results kick in closer to weeks 8-10. The applicator is the most consistent complaint - many users report switching to a clean eyeliner brush for more precise application. Interestingly, a number of long-term users describe using The Ordinary as a "maintenance" serum between cycles of more expensive products, which speaks to its value as an everyday staple rather than a dramatic growth solution.
Our Verdict
The Ordinary earned 8.2/10 in our editorial rubric mainly for price, label transparency, and availability. Our three-person panel reported modest changes, but this is not controlled proof. The reviewed label omitted the covered analogue names; that does not prove the finished formula is safe, irritation-free, or effective.
Where to Buy The Ordinary Multi-Peptide Lash & Brow Serum
The Ordinary Multi-Peptide Lash & Brow Serum: Frequently Asked Questions
Is The Ordinary Multi-Peptide Lash & Brow Serum worth it?
The Ordinary Multi-Peptide Lash & Brow Serum can be worth considering for shoppers focused on the lowest price in our lash serum rankings. We found no controlled head-to-head study showing that it works faster, slower, better, or worse than another formula.
Is The Ordinary Multi-Peptide Lash & Brow Serum prostaglandin-free?
Our dated ingredient-label review found no covered prostaglandin analogue names. Formula labels can change, so check the package. This label screen does not predict speed, efficacy, irritation, pregnancy safety, or another health outcome.
How long does The Ordinary Multi-Peptide Lash & Brow Serum take to work?
Our three testers first reported modest visible changes around weeks 8-10. That is not a promised window or a clinical average. Follow the current directions and do not assume another person's timeline.
What is the main tradeoff with The Ordinary Multi-Peptide Lash & Brow Serum?
The main tradeoff is limited controlled evidence. We weigh price, the dated label, application experience, a small panel, and sampled user-review patterns. The score is not a medical safety grade.