The Peptide Craze Ground Truths PSA] Finally, a Dr. explains the mechanism behind the "copper uglies" : r SkincareAddiction Just started GHK Cu? Here's what to expect This isn't an overnight peptide, it builds Weeks 12: You may start noticing small shiftsskin feels a bit smoother, nails a little stronger Weeks 34: 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline