Is Hexapeptide-9 safe?
Supplier panel claims, no independent data
CAnimal and cell studiesCosmetic ingredientas of 2026-10-26
Cosmetic peptides are used at tiny levels and have no reported effects on the whole body. Ingredient listings describe a low chance of irritation or allergy. In the trial of the cyclised version, no arm reported irritation, including the retinol arm. So it did not show a safety edge over retinol. Patch tests in the carrier study found no reactions. 234
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Citations
- Ashland: Collaxyl biofunctional (hexapeptide-9) product page ashland.com
- SpecialChem: hexapeptide-9 INCI ingredient entry specialchem.com
- Chang 2025, Journal of Cosmetic Dermatology: cyclised hexapeptide-9 versus retinol, randomised double-blind trial doi.org
- Wang 2025, Materials Today Bio: ionic liquid (GALA) for transdermal delivery of hexapeptide-9, lab, mouse and small clinical tests doi.org
Reference information only, not medical advice. Drawn from the Hexapeptide-9 article, fact-checked against the cited sources. No dosing anywhere on this site.