Ingredients

Copper Peptides (GHK-Cu)

Written by Reviewed by the SYNC editorial team Published Last reviewed Editorial standards

Copper Peptides (GHK-Cu) — a naturally occurring complex of the tripeptide GHK bound to a copper ion, studied for its role in skin repair and renewal. It is one of the most researched peptides, associated with collagen support and antioxidant activity. In skincare it is used in products targeting firmness, texture, and overall skin quality.

Key points

  • GHK-Cu combines the peptide glycyl-L-histidyl-L-lysine with copper, a trace mineral involved in skin structure.
  • Research links it to collagen and elastin support, wound-healing processes, and antioxidant defense.
  • It is typically used in serums and treatments aimed at improving firmness and skin texture over time.
  • Some formulators avoid combining it with strong acids or high-dose vitamin C, which may affect its stability.

Frequently asked

Can you use copper peptides with vitamin C?

Many formulators suggest applying them at separate times, since combining copper peptides with high concentrations of vitamin C may reduce the stability or efficacy of both.

Are copper peptides safe for daily use?

They are generally well tolerated for regular use, but as with any active a patch test is wise and you should follow the specific product's directions.

Related topics

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.

Encyclopedia

Further reading

This entry was written and checked against the sources below. They are published by clinical and scientific bodies, they are listed most readable first, and each one opens in a new tab. They are background for the whole entry rather than footnotes to individual sentences.

  1. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  2. Regenerative and Protective Actions of the GHK-Cu Peptide PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  3. The potential of GHK as an anti-aging peptide PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  4. Copper - Consumer NIH Office of Dietary Supplements Clinical guidance ods.od.nih.gov
  5. Copper - Health Professional Fact Sheet NIH Office of Dietary Supplements Clinical guidance ods.od.nih.gov
  6. Applications of bioactive peptides in cosmeceuticals: a review PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov

SYNC does not publish medical advice. Nothing here replaces a consultation with a doctor or a pharmacist about your own skin.