GHK-Cu, explained clearly.

What is GHK-Cu?

GHK-Cu is a copper-binding tripeptide, also listed on an INCI panel as Copper Tripeptide-1. It is the active that gives Morren Blue and Morren Blue Eight their colour: the copper in the peptide complex is what turns a clear solution blue. Morren uses it as a disclosed cosmetic active in face serums designed to support the look and feel of skin.

What has been studied?

GHK-Cu has been studied in laboratory cell culture and in a limited number of small topical studies. That research is why the peptide is interesting, but laboratory findings do not predict a specific result for every formula or every person.

Why concentration matters

Morren lists the actual GHK-Cu percentage rather than a proprietary blend total. Morren Blue and Morren Blue Eight both carry 0.50% GHK-Cu; Renew Complex Daily and Renew Complex Intensive pair GHK-Cu with additional peptide signals at their own disclosed levels. A higher percentage does not guarantee a better individual result — pair the formula to the routine you will actually keep.

GHK-Cu compared with AHK-Cu

Both are copper-binding peptides, but they are used differently. GHK-Cu is used in Morren's face serums; AHK-Cu is used in the scalp-focused hair serums. Root Matrix combines 1.0% AHK-Cu with 0.5% GHK-Cu in one hair formula, so both peptides can appear in the same bottle.

AHK-Cu ingredient guide → · Acetyl Octapeptide-3 guide → · Peptide complex guide → · Copper peptide serum guide →

How to choose a GHK-Cu face serum

Start with Morren Blue for a single-active minimalist copper peptide face serum, Morren Blue Eight when you want GHK-Cu alongside a second signal, Renew Complex Daily for a full multi-peptide daily routine, or Renew Complex Intensive when you want the highest concentration in the range.

Morren Blue · Morren Blue Eight · Renew Complex Daily · Renew Complex Intensive

Using a copper peptide face serum

Apply to clean, dry skin and let it absorb before heavier layers. Morning or evening both work; consistency matters more than timing. Judge appearance and feel over weeks of regular use in consistent lighting rather than day to day.

Cosmetic expectations

Morren serums are cosmetics. They are formulated to support the appearance of skin — Morren does not promise treatment, a medical outcome, or a guaranteed individual result.

Explore the face range

Every face product page includes its concentration, full INCI list, directions, storage guidance, and routine expectations.

All face serums → · Compare face serums → · Shop all serums →