Lash serums that ‘work’ and why: the prostaglandin question, the EU safety verdict, and four labels graded

The short version

• Many lash serums that visibly lengthen lashes contain a prostaglandin analogue (PGA). These are relatives of glaucoma eye drops, whose side effects include longer lashes. [1][2]
• The EU’s Scientific Committee on Consumer Safety (SCCS) said in February 2026 that for three PGAs, including isopropyl cloprostenate, “none of them can be considered safe for use in cosmetic products intended for promoting the growth of eyelashes and eyebrows”. It cited their potent activity even at low concentrations and missing reproductive and developmental toxicity data. [1]
• Eyelid fat loss is a reported concern. Oculoplastic surgeons described a user who developed periorbital hollowing on an isopropyl cloprostenate serum, which reversed after stopping, and found signs consistent with it in brands’ own before-and-after photos. They warned that “often the customer-facing product ingredient list contains no mention of PGAs.” [2]
• The prescription option has real trials. Bimatoprost 0.03% was studied in six randomised, double-masked trials; side effects such as eyelid itching, redness and skin darkening were mostly mild and reversible. [3]
• Without a PGA, expect conditioning, not growth. Peptide and castor oil serums can make lashes look better cared for. We found no comparable evidence that they lengthen lashes.

Product	PGA?	Scope Grade	Why	Buy
GrandeLASH-MD	Yes: isopropyl cloprostenate	C	Discloses the PGA on its site; Amazon title says “peptide & vitamin”	No verified Amazon listing
RevitaLash Advanced	Yes: ethylcloprostenolamide	C	Lists the PGA and reported reactions on its site; “hypoallergenic” on Amazon	No verified Amazon listing
Vectium 5-Peptide Lash & Brow SerumBuy on Amazon: Vectium 5-Peptide Lash & Brow Serum (opens in a new tab)	No	C	Honest “fuller-looking” wording; no growth evidence	Buy on Amazon: Vectium 5-Peptide Lash & Brow Serum (opens in a new tab)
Live Fraiche Organic Castor Oil Lash Serum	No	D	“For Eyelash Growth” in the title; no evidence castor oil grows lashes	No verified Amazon listing

Products we read

No buy links for the PGA serums (our editorial choice while the EU safety opinion stands) or for D grades (policy).

Our read: if you want real lash growth, ask an eye doctor or dermatologist about the prescription option, where the drug, dose and side effects are on the label and someone is watching for problems. If you’d rather stay cosmetic, choose a PGA-free serum and expect conditioning, not length.

---

How to tell if a lash serum contains a prostaglandin analogue

Look for these INCI names on the full ingredient list (often near the end, because the amounts are tiny):

• Isopropyl Cloprostenate (IPCP)
• Methylamido Dihydro Noralfaprostal (MDN)
• Dechloro Dihydroxy Difluoro Ethylcloprostenolamide (DDDE)
• Ethylcloprostenolamide
• Bimatoprost (a prescription drug in the US, studied as an eye solution) [3]

The SCCS opinion covered the first three. [1] Ethylcloprostenolamide is labelled by RevitaLash itself as “a prostaglandin analogue” [5], but it wasn’t one of the three in the SCCS opinion.

---

Product by product

1. GrandeLASH-MD Lash Enhancing Serum: Scope Grade C (Plausible, thin evidence)

The claims: Amazon title (sold by Amazon.com, captured Nov 13, 2026): “Peptide & Vitamin Infused Formula for Longer, Thicker, Fuller Looking Lashes – Ophthalmologist Tested”. Brand site: “proven to promote the appearance of longer, thicker, healthier looking lashes in 4-6 weeks”; “94% saw healthier looking lashes … based on a 12 week consumer study with 30 subjects.” [4]

The formula (brand site [4]): water, panthenol, glycerin, … amino acids, honey and plant extracts, … Isopropyl Cloprostenate (an analog of prostaglandin), … phenoxyethanol, sodium benzoate, sodium metabisulfite. The brand’s directions add: “This cosmetic product contains (a small amount of) isopropyl cloprostenate … Do not use … if pregnant or nursing or undergoing treatment for glaucoma or cancer.”

Check	Finding	Effect
Active	IPCP is a PGA, the class with a real lash-growth mechanism [2][3]	Results plausible
Evidence	The brand’s figures are a 30-person consumer perception study	Thin
Safety	SCCS: IPCP can’t be considered safe in lash cosmetics [1]; periorbital fat loss case with IPCP [2]	Serious caveat
Disclosure	Brand site discloses and warns; the Amazon title says “peptide & vitamin” and doesn’t mention the PGA	Caveat

Not linked (editorial choice, see above). Note: an older ingredient list on a third-party database shows no PGA, so check the box you actually receive.

---

2. RevitaLash Advanced Eyelash Conditioner: Scope Grade C (Plausible, thin evidence)

The claims: Amazon bullets (sold by Amazon.com, captured Nov 13, 2026): “Physician Developed”, “Ophthalmologist reviewed”, “Clinically tested”, “Hypoallergenic“. Brand site: “94% of users using RevitaLash Advanced experienced improved lash appearance” in an 8-week consumer study. [5]

The formula (brand site [5]): water, a thickening polymer, glycerin, biotin, … Ethylcloprostenolamide (a prostaglandin analogue), biotinoyl tripeptide-1, linseed extract, … octapeptide-2, calendula, ginseng and other extracts.

Check	Finding	Effect
Active	A PGA, labelled as such by the brand	Results plausible
Brand-disclosed reactions	Users reported irritation, “temporary darkening of the skin at the lash line, periorbital fat loss, and/or eyelash loss” (0.11% of users, Sept 2024–Aug 2025); “It is not known whether RevitaLash® Advanced or some other factor caused the reported reactions.” [5]	Credit for disclosure; caveat on safety
“Hypoallergenic”	No federal definition [6]	Marketing word

Not linked (editorial choice, see above).

---

3. Vectium 5-Peptide Lash & Brow Serum: Scope Grade C (Plausible, thin evidence)

The claim (Amazon listing, sold by Vectium, captured Nov 13, 2026): “helps condition lashes and brows while supporting a fuller-looking, healthier-looking appearance”.

The formula (INCI on the listing [7]): water, aloe leaf juice, betaine, niacinamide, coco-caprylate/caprate, caffeine, biotin, … sh-oligopeptide-1, sh-polypeptide-1, sh-polypeptide-3, biotinoyl tripeptide-1, acetyl tetrapeptide-3, niacin, panthenol, … phenoxyethanol, citric acid, chamomile extract.

Check	Finding	Effect
PGA	None listed	Avoids the SCCS concern [1]
Evidence	No published trial of this formula or these peptides on lashes that we found	Thin
Claim match	“Fuller-looking” is careful cosmetic wording	Fair

---

4. Live Fraiche Organic Castor Oil Lash Serum: Scope Grade D (Weak or undercut by formula)

The claim (Amazon listing, sold by Live Fraiche, captured Nov 13, 2026): title “Organic Castor Oil Lash Serum for Eyelash Growth Serum and Eyebrow Growth”; “ALL NATURAL EYELASH SERUM WITHOUT PROSTAGLANDIN – Our pure formula will not cause dark eyelids, fat loss or iris discoloration found in other serums … to grow brows”.

The formula (listing [8]): 100% USDA Organic Cold-Pressed Ricinus Communis (Castor) Seed Oil

Check	Finding	Effect
Formula vs claim	Castor oil conditions and coats; we found no controlled evidence that it grows lashes	Growth claim unsupported
PGA-free point	True, and fairly made [2]	Credit
Claim match	“For Eyelash Growth” in the product title	Overclaims

No buy link (our policy for D grades). As a plain conditioning oil, it’s simple and fragrance-free.

---

RevitaLash list is truncated after the ingredients we could read in full on the brand page.

• Claimed / hero active
• Conditioning & film-formers
• Everything else

GrandeLASH-MD 45 ingredients

• #2 Panthenol
• #25 Isopropyl Cloprostenate

RevitaLash Advanced 20 ingredients

• #4 Biotin
• #14 Ethylcloprostenolamide
• #15 Biotinoyl Tripeptide-1
• #18 Octapeptide-2

Vectium 5-Peptide 24 ingredients

• #7 Biotin
• #12 sh-Oligopeptide-1
• #13 SH-Polypeptide-1
• #14 SH-Polypeptide-3
• #15 Biotinoyl Tripeptide-1
• #16 Acetyl Tetrapeptide-3
• #18 Panthenol

Live Fraiche Castor Oil 1 ingredients

• #1 Ricinus Communis (Castor) Seed Oil

Each square is one ingredient, in label order. Original FORMUSCOPE graphic. Hover or tap a square for its name.

Each square is one ingredient in label order. Above 1%, US labels list ingredients in descending order; at 1% or less, order is free. [9]

How to read a lash serum label in 20 seconds

1. Scan the full INCI for “-prost-” names (cloprostenate, prostenolamide, noralfaprostal). Ignore the front of the box.
2. “Peptide & vitamin formula” doesn’t mean PGA-free. Check anyway. [2][4]
3. Pregnant, nursing, or treated for glaucoma? PGA serums’ own warnings say don’t. [4]
4. No PGA = conditioning. Judge those on feel, not on growth promises.

When to see a professional

See an ophthalmologist or dermatologist before using a PGA lash serum if you have glaucoma or other eye conditions, and stop and get checked if you notice eye redness or irritation that persists, eyelid darkening, a sunken look around the eyes, or any change in eye colour. Sudden lash or brow loss can signal a medical condition and deserves a proper look. FORMUSCOPE grades label claims; we don’t give medical advice.

Sources

1. European Commission, Scientific Committee on Consumer Safety. Opinion on prostaglandin analogues: methylamido-dihydro-noralfaprostal (MDN), isopropyl cloprostenate (IPCP), dechloro dihydroxy difluoro ethylcloprostenolamide (DDDE), SCCS/1680/25, final opinion published Feb 10, 2026. https://health.ec.europa.eu/publications/sccs-prostaglandin-analogues-methylamido-dihydro-noralfaprostal-mdn-isopropyl-cloprostenate-ipcp_en (accessed Nov 13, 2026)
2. Jamison A, et al. Do prostaglandin analogue lash lengtheners cause eyelid fat and volume loss? Aesthet Surg J. 2022;42(11):1241-1249. [Case report + blinded grading of manufacturer photos] https://pubmed.ncbi.nlm.nih.gov/35700523/
3. Wirta D, et al. Bimatoprost 0.03% for the treatment of eyelash hypotrichosis: a pooled safety analysis of six randomized, double-masked clinical trials. J Clin Aesthet Dermatol. 2015;8(7):17-29. [Pooled RCT safety · n=1,059 · drug-maker co-authors] https://pubmed.ncbi.nlm.nih.gov/26203317/
4. Grande Cosmetics. GrandeLASH-MD (claims, ingredients, directions and warnings). https://www.grandecosmetics.com/products/grandelash-md · Amazon listing: https://www.amazon.com/dp/B00325D0WK (accessed Nov 13, 2026)
5. RevitaLash Cosmetics. RevitaLash Advanced Eyelash Conditioner (ingredients, FAQ incl. reported reactions). https://www.revitalash.com/products/revitalash-advanced-eyelash-conditioner · Amazon listing: https://www.amazon.com/dp/B0DNVPTXT9 (accessed Nov 13, 2026)
6. US FDA. “Hypoallergenic” Cosmetics. https://www.fda.gov/cosmetics/cosmetics-labeling-claims/hypoallergenic-cosmetics (accessed Nov 13, 2026)
7. Vectium 5-Peptide Lash & Brow Serum, 0.34 fl oz: Amazon listing (claims, INCI). https://www.amazon.com/dp/B0HD7JHBVK (accessed Nov 13, 2026)
8. Live Fraiche Organic Castor Oil Lash Serum: Amazon listing (claims, ingredients). https://www.amazon.com/dp/B01ICGFKDU (accessed Nov 13, 2026)
9. US FDA. Cosmetics Labeling Guide (order of ingredient declaration; 21 CFR 701.3). https://www.fda.gov/cosmetics/cosmetics-labeling-regulations/cosmetics-labeling-guide (accessed Nov 13, 2026)
10. Scope Grade rubric v1.0. https://formuscope.com/methodology/