Injectable GHK Cu: Beginner's Guide to Copper Peptide Is it necessary to cycle on and off of every peptide? The answer may not be as simple as you think, and it depends on *why* the peptide is being used., The standard logic for cyclingusing something GHK Cu Copper Peptide: The Ultimate Peptide For Longevity This is my third cycle on GHK Cu., My hair is growing. My nails are strong. My skin has improved. , And now Im focusing on those acne scars from my younger days., And honestly? Theyre starting to go GHK Cu Focal Point Vitality