What is GHK-Cu? A plain guide to copper peptides

If you have looked at serum labels recently, you may have seen GHK-Cu, or its ingredient-list name, Copper Tripeptide-1. It sounds technical, but the idea behind it is simple.

What GHK-Cu is

A peptide is a short chain of amino acids, the building blocks of proteins. GHK is a peptide made of just three amino acids: glycine, histidine and lysine. It has a natural attraction to copper, and when the two are paired you get GHK-Cu, a copper peptide.

GHK occurs naturally in the body. In skincare, a lab-made version is used in serums and creams.

What it does in skincare

In cosmetic products, copper peptides are used to help skin look firmer and smoother, and to improve the look of skin texture. They are a gentle, well-tolerated choice, which is why they suit a simple daily routine.

Like any skincare ingredient, GHK-Cu works on the look and feel of your skin over time. It is a habit, not an overnight change.

How to use a copper peptide serum

  • Apply to clean, dry skin, after cleansing and before moisturiser.
  • A few drops is enough for face and neck.
  • Be consistent. Daily use for several weeks gives the fairest picture.
  • Finish with SPF in the daytime. Sun protection is the most effective thing you can do for the long-term look of your skin.

What to pair it with

Copper peptides sit comfortably alongside hydrating ingredients such as hyaluronic acid, and with a simple moisturiser. If you also use strong acids or vitamin C serums, many people prefer to use those at a different time of day. If you are unsure, keep things simple.

GHK-Cu in Vellumia

The Vellumia Signature Facial Serum combines GHK-Cu with hyaluronic acid for hydration and SNAP-8, a second peptide, in one lightweight step for face and neck.

As with any new skincare, try a small amount first. If you have a skin condition or concerns, ask your pharmacist or doctor.