Same GHK Cu. Better way. Same GHK Cu copper peptide complex. Completely different experience. If you've been eyeing the pen, put it down. We made something better, and your skin barrier will thank you GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL) Skin Perfection Copper Peptide Serum GHK CU 1% for Jordan Ubuy Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz Not all copper peptide serums are formulated the same Before you buy one, make sure you're actually getting pure GHK Cu at the right concentration not just a diluted blend. We spent Amazon.com: GHK Cu Copper Peptides Serum for Face: Advanced Anti Aging Serum with Multi Peptide and Niacinamide for Fine Lines and Skin Elasticity : Beauty & Personal Care