GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Copper, Collagen, and Controversy: Inside the GHK Cu Buzz Oral Liposomal Copper GHK Liposomal GHK Cu Supplement Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect Sublingual GHK Cu TruHealth Physical Therapy