Compare GHK (evidence C) and Pal-AHK (evidence D) on mechanism, clinical status, safety, and dosing.
GHK is a naturally occurring tripeptide (Gly-His-Lys) that serves as the base form of GHK-Cu. Found in human plasma, saliva, and urine, its concentration…
Pal-AHK (Palmitoyl Tripeptide-3) is a lipopeptide combining a palmitoyl group with the AHK copper-binding tripeptide sequence. Researched primarily for hair…