When you buy GHK-Cu peptide, look for: retention time consistency on HPLC trace, molecular ion peak matching 403.93 Da on the mass spectrum, purity percentage (we guarantee 99%), and copper content verification
It works on a different pathway than either medication, which is why it stacks well with both
Tokura, Y., Nakayama, Y., Fukada, S., Nara, N., Yamamoto, H., Matsuda, R., & Hara, T
The copper complex has stability characteristics that depend on the formulation environment, and a formulation outside the appropriate pH range can affect the integrity of the copper complex over the formulations shelf life
StatPearls (Internet)
1 It binds to skin cell receptors to enhance gene expression related to repair and renewal, reducing the activity of enzymes that degrade skin structural proteins with age, and helping restore the skins natural regeneration processes