PAL-AHK

This modified version of the AHK tripeptide gets attached to a fatty acid chain to help it penetrate deeper into scalp tissue. Cosmetic researchers have explored it as a potential ingredient for hair care products, though it remains in experimental stages. The lipopeptide represents an attempt to solve the delivery problem that limits many peptides in topical applications.

The attached palmitoyl chain acts like a molecular taxi, helping the peptide slip through the skin's fatty barrier and reach hair follicles below the surface. Once there, the AHK portion appears to interact with cells in the dermal papilla—the small structure at the base of each hair follicle that controls hair growth. This interaction may trigger the release of vascular endothelial growth factor (VEGF), which could improve blood flow and nutrient delivery to growing hair.