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Key Takeaways GHK-Cu is a naturally occurring copper peptide that may have potentially beneficial effects in supporting skin firmness, hair growth appearance, and collagen production AHK-Cu is a synthetic copper peptide that has shown positive effects on hair and scalp health appearance in available research The comparison between AHK-Cu vs GHK-Cu shows GHK-Cu has the broader research base for both skin appearance and hair growth with consistent application Some users may explore AHK-Cu and GHK-Cu together, however, published research on the efficacy of this approach is limited PLU Laboratories offers both GHK-Cu and AHK-Cu peptide serums, with GHK-Cu as our flagship for skin and hair support and AHK-Cu available as a dedicated hair-focused option What is GHK-Cu

It's a synthetic copperbinding tripeptide , often described as a labdesigned analog of GHKCu with alanine substituted for glycine

The correct dosage will be determined by your healthcare provider based on your medical condition and response to treatment

, Serum concentrations of vitamin B 12 and folate in British male omnivores, vegetarians and vegans: results from a cross-sectional analysis of the EPIC-Oxford cohort study , Eur J Clin Nutr , vol