How X39 patch boosts GHK Cu for regeneration Dr. Staci Holweger posted on the topic LinkedIn GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more, , , Heres what it can do:, Boost collagen for smoother, firmer skin, Anti aging improves fine 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 peptides from Transcend, and Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect