2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline What are the dosing regimens and potential side effects of GHK Cu (Glycyl Histidyl Lysine Copper) peptides in various conditions, including wound healing and neurodegenerative diseases? The difference between our Copper Peptides and GHK Cu GHK Cu is one specific copper peptide molecule great for signaling repair and collagen support. Our Copper Peptide formula goes beyond just Ghk cu and skin peptides (topical) Skin regeneration and wrinkle reduction Longevity Protocols