GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? 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: Peptide GHK CU Cream Concierge MD Glow from within with GHK Cu Copper Peptide This powerhouse peptide supports collagen production, skin repair, and hair follicle health, helping improve skin firmness, radiance, and support fuller, healthier looking hair from the GHK Cu Focal Point Vitality GHK Cu Injection AgelessRx