Where to Buy GHK-Cu for Research

What GHK-Cu is, in research terms

GHK-Cu is a tiny peptide — just three amino acids, glycine, histidine and lysine — that holds onto a copper ion. It was first described in the 1970s and has since become one of the most-studied peptides in skin and connective-tissue research.

Most of that work asks how the cells that build and maintain structural tissue behave: how they produce and organize the proteins that give tissue its structure, and how copper delivery fits into that picture.

What to look for when you buy GHK-Cu

• An exact amount on the label. GHK-Cu is usually sold in larger vial sizes than most peptides, so the stated amount matters.
• A sealed lyophilized powder. Its characteristic blue color comes from the copper; the vial should arrive sealed and dry.
• Documentation you can ask for. A supplier should be able to speak to the lot you received.
• A research-only seller. GHK-Cu is popular in consumer skincare, but a research vial is a laboratory material — buy it from someone who sells it as one.

How pricing works

GHK-Cu is priced per vial, with multi-vial packs lowering the per-vial price on most of our products. Current pricing is always live on the product card below.

Why researchers buy GHK-Cu from PML

PML Sciences is a women-led research supply company with a small, curated collection. Every order is packed by hand and ships the same day Monday through Friday when you order by 2 PM ET, from Georgia, USA.

GHK-Cu is also one of the four compounds in our KLOW research formulation.