GHK-Cu is most stable at pH 5.06.0, which is slightly acidic
Urano K, Maruyama K, Ogata Y, Morishita Y, Takeda M, Sakurai N, Suzuki H, Saito K, Shibata D, Kobayashi M, Yamaguchi-Shinozaki K, Shinozaki K (2009) Characterization of the ABA-regulated global responses to dehydration in Arabidopsis by metabolomics
A balanced formula not only protects ingredient stability but also improves the sensory experience of the serum
This is what makes bacteriostatic water the long-established standard diluent for reconstituting lyophilized research peptides such as BPC-157, retatrutide, GHK-Cu, and tirzepatide
Working within that intellectual tradition at the University of Zagreb School of Medicine, a group led by Predrag Sikiri proposed that human gastric juice itself contained protein mediators of this protective response