← Hair & scalpSCALP INGREDIENT · EDITORIAL DRAFT
Acetyl Tetrapeptide-3
A peptide listed with red clover extract in the brand’s Capixyl blend.
What is it doing on the label?
The manufacturer identifies this peptide in Capixyl, a multi-ingredient system.[1]
What does the evidence support?Human formulation study — different product
A 32-person, 24-week trial examined another combination containing this peptide, not The Ordinary serum or the peptide alone.[2]
Results cannot be transferred directly to this bottle or interpreted as proof of equivalence to minoxidil.
Checked 2026-10-20 · Human editorial and qualified scientific review pending. This profile does not establish individual tolerance.
References and their limits
- Manufacturer labelMulti-Peptide Serum for Hair Density — US manufacturer label and 60 mL offer
Evidence and limitations for reference 1
- What this supports here
- US 60 mL presentation, USD 24 observation, selected names and directions.
- What it cannot establish
- Commercial source, not independent product testing. Individual pure-peptide amounts are not established by blend names. Formula and offer can change.
- Commercial context and disclosures
- Published by the seller.
- What we inspected
- US product page, selected INCI names, offer and directions inspected. No finished-product clinical dossier reviewed.
- Human formulation study
Lueangarun S, Panchaprateep R 2020. Journal of Clinical and Aesthetic Dermatology 13(10):32–37.
Herbal extract combination versus 3% minoxidil: a 24-week randomized trialEvidence and limitations for reference 2
- What was studied
- 32 participants; randomized triple-blind active-comparator trial; 24 weeks; no placebo arm.
- What was reported
- Both groups improved; no statistically significant between-group difference in terminal hair-count increase.
- What this supports here
- A different multi-ingredient formulation containing Acetyl Tetrapeptide-3.
- What it cannot establish
- Different product; cannot isolate the peptide or establish equivalence to minoxidil. Small study, limited duration.
- Commercial context and disclosures
- Authors report no funding and no relevant conflicts; not independently audited.
- What we inspected
- PMC full text: abstract, methods, results and disclosures inspected.