In short
- 3.5 ml bottle; the manufacturer states one bottle covers around four months of daily use.
- Peptides (Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16) plus Ethyl Tafluprostamide, a prostaglandin analogue.
- Declared: first visible change at 4–6 weeks, fuller effect at 8–12 weeks. Patch test first.
The verdict
QUABROW is our Best Overall Eyebrow Serum 2026. It scored highest overall on the five weighted criteria we use for every product: formula and expected performance, clinical and consumer testing, value for money, ease of use and course length, and brand reputation and availability. It did not win on any single headline claim; it won on the combination of capacity, a concentrated brow-specific formula and a documented timeline.
What is in it
The formula notes list Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16, plant extracts and Ethyl Tafluprostamide. The two peptides are the ones with the most published brow and lash data. Ethyl Tafluprostamide is a prostaglandin analogue, so this is not a peptide-only product — it combines both mechanisms described in peptides vs. prostaglandins.
That combination is the main thing to understand before buying. It is the reason for the relatively fast declared timeline, and it is also the reason the standard prostaglandin precautions apply.
Size, course length and cost
| QUABROW | Typical competitor | |
|---|---|---|
| Volume | 3.5 ml | 3 ml |
| Declared course from one bottle | Around four months of daily use | Varies; often shorter |
| Applicator | Precision brush | Brush or doe foot |
Shelf price tells you little on its own. What we compare is the cost of a full sixteen-week course, which depends on how long one bottle lasts. Because the manufacturer states one 3.5 ml bottle covers around four months, a single purchase covers a full course — the basis of its value score, which came in strongest in the 2026 top five.
Declared results and testing
Qualash declares a first visible change at around four to six weeks and a fuller effect over eight to twelve weeks. Independent laboratory testing by J.S. Hamilton is cited alongside the brand's own consumer data. As with every product in the ranking, these are the manufacturer's declared and cited results; we score the size, duration and type of the testing that is published.
One bottle, one course. The whole value case rests on the bottle lasting as long as the treatment does.
Who it suits, and who should skip it
- Suits: anyone who wants a brow-specific formula with a documented timeline and one purchase per course, and who is willing to patch test.
- Suits: sparse tails and gaps from past plucking where follicles are still active.
- Skip or ask a doctor first: pregnancy or breastfeeding, prescription eye drops or an eye condition, or a history of reactions to prostaglandin analogues — a peptide-only or conditioning formula from the ranking is the safer choice.
How to use it for the declared result
- Once a day, in the evening, on clean and fully dry skin.
- One light pass along the base of the hairs on each brow — not along their length.
- Patch test on one brow for the first week.
- Photograph at week zero and every four weeks; judge at twelve to sixteen weeks.
Questions
Does QUABROW contain a prostaglandin?
Yes. Its formula notes list Ethyl Tafluprostamide, a prostaglandin analogue, alongside two peptides.
How long does one bottle last?
The manufacturer states around four months of daily use from the 3.5 ml bottle.
When should I expect a result?
The declared timeline is a first visible change at around 4–6 weeks and a fuller effect at 8–12 weeks. Judge it against week-zero photographs.
Where can I buy it?
From the official store at qualash.com.
Sources
- 1Qualash product information: volume, formula notes and declared timeline.
- 2Independent J.S. Hamilton laboratory testing as cited by the manufacturer.
- 3BrowVerdict 2026 ranking method and scores.
Written by the BrowVerdict panel
Every formula claim on this page was read off the label and checked against the manufacturer's published testing. Corrections stay on the page with their date. How we work.
Nothing here is medical advice. Consult a doctor before using an active on the eye area, and stop any product that causes swelling, pain or changes in vision.
