GHK-Cu has a copper connection

Unpack the letters without a chemistry lesson

GHK links glycine, histidine and lysine in a short string; these are amino acids, the building blocks of proteins.

With copper attached, that peptide is called GHK-Cu.

Skincare labels may call the ingredient copper tripeptide-1.

Copy the name from the actual label. A similar-looking ingredient name is a reason to ask whether it is the same ingredient.

Keep skin use and injection apart

The approval search used for this guide found no FDA-approved GHK-Cu medicine on September 30, 2026.

Food and Drug Administration (FDA) rules put cosmetic claims and drug claims under separate requirements.

Ask the person making the offer to identify the form before talking about a study. A paper about a cream belongs with the cream question.

Ask what was tested

Ask whether people were studied with this exact ingredient, in this form, for the result being described.

Then ask to see the study rather than a photograph, a slogan or an ingredient list.