GHK Cu Peptide: Turn Back the Clock Naturally Calibrate Hydration PDF) Effects of GHK Cu on MMP and TIMP Expression, Collagen and Elastin Production, and Facial Wrinkle Parameters One of my favorite peptides is GHK Cu. It has made such a dramatic impact on my skin in just one cycle I've been shocked! It supports collagen, healing, and overall skin Our combination of GHK CU Peptide Therapy + advanced laser skin treatments helps support collagen production, improve skin texture, reduce redness, and promote a healthier, more youthful appearance. At Icon MD, every treatment