Pentapeptide-18

Does Pentapeptide-18 work?

Not properly: animal or lab studies, or small uncontrolled human reports. Two reports of 20 people each.

The human evidence is two small uncontrolled studies: a 20-volunteer, two-month test of pentapeptide-18 creams at three strengths, in which only the strongest reduced measured wrinkle length, and an eight-week test in 20 women of a cream that also contained retinol. Neither had a vehicle or placebo control, and the manufacturer has not published its own trial data. Uncontrolled series put it at C for expression lines. ¹³

A 2014 study came from a Romanian pharmacy faculty. It applied creams with three concentrations of pentapeptide-18 to the forehead and eye area of 20 volunteers for two months. A 2D skin imaging device tracked wrinkles. Only the strongest cream produced a clear change. Wrinkle length fell by an average of 34.7% between the eyebrows and 28.4% around the eyes. The study had no cream-only comparison and did not measure wrinkle depth. So it cannot separate the peptide from the cream base or from measurement drift. ¹

A 2024 Polish study put pentapeptide-18 and retinol together into lipid nanoparticles in a night cream. It tested the cream for eight weeks in 20 women with signs of skin aging. It reported fewer wrinkles and better hydration. Retinol has its own evidence for wrinkles. So the study says little about pentapeptide-18 alone. Supplier data on the ingredient sit behind a login on trade listings. No journal has published them. ³²

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Reference information only, not medical advice. Drawn from the Pentapeptide-18 article, fact-checked against the cited sources. No dosing anywhere on this site.