The Ordinary's Multi-Peptide Lash & Brow Serum and the Lash Originals Lash Serum sit in the same safe corner of the market — peptide-based, prostaglandin-free — but they're built for different users. The Ordinary optimises for price and a single do-everything formula; we optimise for a dedicated lash treatment tested for sensitive eyes. Here's the fair comparison.
Where the formulas agree
Both avoid prostaglandin analogues entirely — no "-prost" ingredients, no lid-darkening pathway. Both rely on peptide complexes to condition lashes for a fuller, healthier look over weeks, not days. If you're choosing between these two, you've already ruled out the prostaglandin ingredient class.
Where they differ
| The Ordinary Multi-Peptide | Lash Originals Lash Serum | |
|---|---|---|
| Scope | One shared formula for lashes and brows | Dedicated lash formula (separate brow serum exists) |
| Key actives | Multi-peptide complex | Peptides (acetyl tetrapeptide-3, biotinoyl tripeptide-1) + biotin + panthenol |
| Testing | Brand's standard cosmetic testing | Ophthalmologist-tested, formulated for sensitive eyes |
| Price | Budget leader — genuinely hard to beat per mL | Mid-range; ~3 months per tube |
| Availability | Global beauty retail | Direct, ships Australia-wide |
What about brows? The Ordinary's serum is a lash and brow formula
The Ordinary sells a single Multi-Peptide Lash & Brow Serum for both areas. We take the other route: a separate Eyebrow Serum built around hydrolyzed keratin, biotin and peptides, with a spoolie sized for a brow line rather than the fine tip a lash line needs. If one tube for both is what you want, The Ordinary is the simpler buy. If you would rather use a formula made for brows, ours is built for that.
One thing worth checking before you choose: our Eyebrow Serum contains hydrolyzed keratin, which is sheep-derived, and hydrolyzed wheat protein — so it is not vegan and not suitable if you avoid wheat proteins. Our Lash Serum is the vegan one in the range. If you are weighing up the brow options sold here, we compare them in brow serums available in Australia.
Our honest take
If budget is the deciding factor, buy The Ordinary — it's a well-formulated product and we'd rather you use a safe serum consistently than an expensive one occasionally. Choose ours if you want a formula specifically built and tested for the lash line and sensitive eyes, a finer applicator for precise daily use, and a routine you can extend to brows and scalp with matching formulas (the Triple Care Set bundles all three). Either way: apply daily, give it 8–12 weeks, and judge on consistency — that's what actually determines results in this category.
Is The Ordinary's lash serum prostaglandin-free?
Yes. Both serums in this comparison avoid prostaglandin analogues — you won't find an ingredient ending in "-prost" on either INCI list. That is the single most important thing to check on any lash serum label in Australia, and both pass it.
Which one is better if I have sensitive eyes?
Ours is ophthalmologist-tested and formulated specifically for the lash line, and its fine-tip applicator is designed to keep the serum off the lid. The Ordinary's is one formula shared between lashes and brows. Whichever you choose, patch test before first use and stop if irritation occurs.
How long before I can judge either serum?
Give either one 8–12 weeks of daily use before deciding. A natural lash cycle runs roughly 90 days, so nothing in this category — ours included — shows its full picture sooner. Individual results vary.
Browse: all lash serums and lash care · all brow serums.
Related reading
- What the evidence says about brow serums
- Best Eyelash Serum in Australia (2026)
- Do Lash Serums Actually Work? What the Science Says (2026)
- Best Eyebrow Serum in Australia (2026 Guide)
- Prostaglandin-Free Lash Serums Explained: What the Ingredient List Actually Tells You
Written by the Lash Originals Editorial Team · Reviewed 7 September 2026. This article is general cosmetic information, not medical advice.