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Ranked #10 of 15 Contains a prostaglandin analogue

M2 BEAUTÉ Eyelash Activating Serum

The luxury end of the category, sold through clinics and premium retailers, and built on norbimatoprost, a derivative of the glaucoma medicine bimatoprost. It works. It costs £120.

Tested by the Growth Lash Serum panel · 12-week trial · Last reviewed 13 August 2026 · How we test

Price
£120
Size
5 ml
Cost / month
~£40
Type
Growth serum
Compare all 15 → Read the verdict
M2 BEAUTÉ Eyelash Activating Serum bottle
Growth overall score
Prostaglandin analogue: Norbimatoprost
7.3
/ 10

Score breakdown

Efficacy
9.0

Strong, reliable results — this is a serious formula.

Safety
4.8

Capped: methylamido-dihydro-noralfaprostal, an SCCS-flagged analogue.

Ingredients
8.2

Well-formulated base with hyaluronic acid and peptides.

Value
4.5

£120 for 5 ml. The most expensive product in the ranking.

The full review

12-week user trial · INCI read line by line

What is in it

Panthenol, biotin and a long amino-acid complex with sodium hyaluronate — a genuinely well-built conditioning base. Tenth on the list is norbimatoprost, a derivative of bimatoprost, the licensed glaucoma medicine whose best-known side effect is lash growth. Norbimatoprost is not one of the three compounds the SCCS named in February 2026, but it belongs to the same family and is structurally closer to a pharmaceutical than most cosmetic analogues. Less regulatory attention is not the same as more safety.

Full ingredient list

Aqua, Phenoxyethanol, C12-15 Alkyl Benzoate, Caprylyl Glycol, Triethanolamine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Panthenol, Biotin, Alcohol, Norbimatoprost, Sodium PCA, Sodium Lactate, Arginine, Sodium Hyaluronate, Aspartic Acid, PCA, Sodium Phosphate, Glycine, Alanine, Serine, Hydrolyzed Glycosaminoglycans, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine.

How it performed

Strong. Visible results from week six and sustained improvement through week twelve, with a refined finish that matches the price positioning. No irritation reported in our trial.

Who it is for

People buying through a clinic who want a premium product and have discussed it with their practitioner. The standard exclusions apply and matter more here, because clinic distribution can make a product feel medically endorsed when the analogue question is unchanged.

What we liked

✓
Genuinely strong, consistent results
✓
Well-formulated supporting base
✓
Larger 5 ml bottle

Keep in mind

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£120 — around £40 a month
−
Contains norbimatoprost, a bimatoprost derivative
−
Clinic distribution can imply an endorsement the formula does not earn
The verdict

Ranked #10 of 15

An excellent serum at a price that only makes sense if the retail experience matters to you. The active is the same class as products here at a quarter of the cost.

7.3
Growth score

Safety note

This product contains Norbimatoprost. Prostaglandin analogues are associated with darkening of the eyelid skin, loss of fat around the eye socket and, rarely, permanent change to iris colour. Do not start it if you have glaucoma or ocular hypertension, or use prescribed eye drops, without speaking to a clinician. Patch-test first, photograph your eyes for a baseline, and stop if you notice redness, swelling, darkening or any change to your vision.

We review products, we are not clinicians, and this is not medical advice. Ingredient information was taken from the manufacturer's published INCI list on 13 August 2026 — formulas change and brands sell variants under similar names, so check the pack you are holding. If this page is out of date, email us and we will correct it.