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 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics GHK Cu Copper Peptide Hair & Scalp Serum Sublingual GHK Cu TruHealth Physical Therapy