QUALASH Activating Peptide Eyelash Serum
The new generation of QUALASH runs entirely on peptides: three targeted peptides in a formula the manufacturer states is prostaglandin-free. The most complete peptide profile in our 2027 ranking.
What it is
QUALASH Activating Peptide Eyelash Serum is the peptide version of the serum that already topped our 2026 Top 10. Where many lash serums lean on a single active, QUALASH uses a combination of three peptides, each with its own job. The manufacturer explicitly states the formula is prostaglandin-free — the ingredient group linked to redness, itching and discoloration in other serums.
It comes in a 5 ml bottle with a fine applicator. Apply once a day, ideally in the evening, along the upper lash line like a liquid eyeliner.
The formula: three peptides
| Peptide (INCI) | Role in the formula |
|---|---|
| Acetyl Tetrapeptide-3 | Targets the lash base, helping lashes stay anchored and shed less. |
| Octapeptide-2 | Supports the lash growth phase; used for length and density. |
| Biotinoyl Tripeptide-1 | A biotin-linked peptide used for strength and thicker-looking lashes. |
The interplay is what sets this formula apart: anchoring, growth phase and strength are all covered. Read more about how these peptides work in peptides in lash serum, explained.
How to use it
Apply the serum every evening to a clean, dry lash line — one thin stroke per eye is enough. Let it dry for a minute before eye cream or make-up. Remove contact lenses before applying.
As with any peptide serum, results build gradually: expect 4 to 8 weeks for the first visible change and around 12 weeks for the full effect. Using it consistently every day matters more than the amount — see why consistency beats concentration.
How it compares
In our 2027 peptide ranking, QUALASH scores 9.7/10, ahead of The Ordinary (9.0) and SWEED (8.8). The Ordinary names more peptides and is cheaper, but lacks QUALASH's targeted three-way split. OLAPLEX LASHBOND and Clinique are strong, gentle alternatives, with a less pronounced peptide profile. For a full head-to-head with our number two, read QUALASH vs. The Ordinary.
Who it's for
Anyone looking for a serum without a prostaglandin analog who doesn't want to compromise on a seriously built formula. That makes it a logical choice for sensitive eyes, contact lens wearers and anyone who has reacted to a prostaglandin serum before.
If budget is the deciding factor, The Ordinary is a sensible starting point. If you want the most complete peptide profile on sale in 2027, QUALASH is the one to beat.
What we liked
- Three targeted peptides: Acetyl Tetrapeptide-3, Octapeptide-2 and Biotinoyl Tripeptide-1
- Prostaglandin-free according to the manufacturer
- Generous 5 ml bottle
- Suits anyone after gentle, peptide-based care
Worth knowing
- Mainly sold direct through the official QUALASH web shop
- New formula, so few long-term user reviews yet
- Like every peptide serum: needs patience, results build over weeks
The verdict
QUALASH Activating Peptide Eyelash Serum is the peptide serum to buy in 2027. Three peptides with clearly defined roles, a formula the manufacturer states is prostaglandin-free and a generous 5 ml bottle make it the clear number one in our peptide ranking. The only caveats — limited stockists and a formula that is still new — don't cost it first place.