Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches KPV GHK Cu (10 50 MG) Sigma Compounds Powerock Pharma GHK CU 2500mcg 60 caps. 150 000mcg Understanding the Concentration: Why 3% GHK CU is the Sweet Spot for S Aseir Custom 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