Oral Liposomal Copper GHK Liposomal GHK Cu Supplement 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 GLOW Nasal Spray Polar Peptides Revitalize your skin with the ultimate rejuvenation ally! GHK Cu Nasal Spray by Xenogenix delivers powerful copper peptide goodness to boost collagen, smooth fine lines & give you that youthful glow.