Residues Phe40, Leu43 and Phe47 from Syt1 form hydrophobic interactions with several hydrophobic amino acids in the nanobody, including Val34, Tyr46, Trp59, and Trp108
The specific glycyl-L-histidyl-L-lysine sequence with a copper 2+ complex is what has 50 years of peer-reviewed support behind it
"The copper peptide GHK-Cu acts as a signal transducer, shifting gene expression toward a highly active state of tissue repair and cellular recovery." Research parameters and comparative studies can be reviewed at the PubChem Copper Tripeptide Database or searched on PubMed at PubMed GHK-Cu Collection for cellular research
Add in the potential for an itchy, inflamed scalp, a greasy finish, and the reality of long-term dependency to maintain results, and its easy to see why some people abandon the treatment before it starts working
Moxley RT, Arner P, Moss A, Skottner A, Fox M, James D, Livingston JN