GHK CU, Why this audio? Because injecting feels like a constant wasp sting so it takes me about 15 seconds to pin .2 mL. I dread this shot every night for that reason. Also, it leaves me bruised, so I Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit GHK Copper Peptide GHK Cu Tripeptide 1 The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline