Three of the most-searched peptides in skin and cellular research are GHK-Cu, the GLOW Blend, and KPV. They often come up together, but they're studied for different reasons and work through different mechanisms. Here's how they compare, so you can see which fits the research you're doing.

Quick comparison

  • GHK-Cu — the "copper peptide." A copper-binding tripeptide, the single most-studied compound in skin, collagen and cellular-remodelling research. The foundational one.
  • GLOW Blend — a combination product: GHK-Cu plus the repair peptides BPC-157 and TB-500 in one vial. Studied where skin and tissue-repair research overlap.
  • KPV — a tripeptide fragment of α-MSH, studied mainly in inflammation research (including skin and gut), through a different pathway to the other two.

GHK-Cu — the foundation

If you're starting in skin research, GHK-Cu is the reference compound. It's a copper-binding peptide with a large body of literature in collagen, skin and cellular-remodelling research. Our GHK-Cu in skin and cellular research spotlight goes deeper on the copper-binding chemistry that makes it interesting. We stock it in 50MG and 100MG.

GLOW Blend — the all-in-one

The GLOW Blend combines GHK-Cu with BPC-157 and TB-500 — two of the most-studied tissue-repair peptides — in a single lyophilised vial. The logic is that each works through a different mechanism (copper-binding, repair signalling, cell migration), so a blend lets you study the combined profile in one preparation. Our GLOW Blend explained article breaks down why researchers use a blend instead of three separate vials.

KPV — the inflammation angle

KPV is the outlier of the three. Rather than copper-binding or tissue repair, it's studied for its role in inflammation signalling, as a short fragment of α-MSH. It shows up in skin research, but also heavily in gut and inflammation models — a different pathway to GHK-Cu and the GLOW Blend. See the KPV spotlight for the detail.

Which is which — in one line

  • Copper-binding / collagen & skin-remodelling research → GHK-Cu
  • Skin + tissue-repair combined in one vial → GLOW Blend
  • Inflammation-pathway research → KPV

Handling and sourcing

All three are supplied as lyophilised powder — store at −20°C, reconstitute with bacteriostatic water, and keep refrigerated once mixed (see how long reconstituted peptides last). Every batch is independently tested with a published Certificate of Analysis in our CoA Library, dispatched same or next business day from Melbourne.

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All products are supplied strictly for laboratory and in-vitro research use only. Not for human or veterinary consumption. This article describes fields of scientific research and is not medical advice or a claim about effects in humans.