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Our science

GHK-Cu

A copper‑bound peptide skin makes naturally, GHK-Cu may support firmer, smoother skin by activating existing repair signaling pathways.

GHK-Cu:
How does it work?

GHK-Cu is a tiny copper‑carrying peptide your body makes. It signals skin cells to repair, remodel, and renew, but those signals fade as you age.1

Applied to the skin, it may support the collagen and elastin that keep skin looking firm and smooth.2

What GHK-Cu may support

Because GHK-Cu is applied directly to the skin, researchers can study visible changes in the same tissue where the peptide is being used.
May support the look of firmer, more elastic skin.3
Signals collagen and elastin renewal in the skin.2
May help soften the appearance of fine lines and uneven texture.
Available as a clinician-guided GHK-Cu Cream with ongoing support.

How GHK-Cu works

Think of GHK-Cu like a repair note the skin already knows how to read. The peptide carries copper to skin cells, where it helps switch on enzymes involved in cellular renewal.1

Applied topically, GHK-Cu may help restore that signal, carrying copper into the repair pathways that remodel collagen and elastin to rebuild youthful structure.

Explore GHK-Cu

GHK-Cu levels fall about 60% between ages 20 and 60. Human studies.1

60%

GHK-Cu benefits

What GHK-Cu may support for skin and healthy aging, with the evidence behind each.

Firmness

May support the look of firmer, more elastic skin. Human studies.3

Fine lines & texture

May soften the look of fine lines and uneven texture. Human studies.3

Collagen & elastin

Signals collagen and elastin production in skin cells. Preclinical.2

Skin renewal

Supported skin stem‑cell recovery in lab studies. Preclinical.4

Cell markers

Raised skin‑cell renewal markers in the lab. Preclinical.5

Skin repair

Supports the skin’s own repair and renewal. Preclinical.6

Antioxidant & calming

Shows antioxidant and inflammation calming activity in skin. Preclinical.1

What we still don’t know

We believe in full transparency. Here’s what GHK-Cu research doesn’t yet answer.

Cosmetic uses

GHK-Cu is not FDA‑approved to treat any medical condition.

Topical evidence

Most evidence is preclinical or from small skin studies.

Invisible results

Visible results vary and build gradually with consistency.

We take skin science seriously

GHK-Cu sits at the intersection of peptide science and skin aging, so formulation, strength, and clinical guidance matter. Our in-house clinicians and Stanford PhD-led Research Team bring both sides together.
199+ years of combined clinical experience behind your care.
Stanford PhD-led Research Team behind 11+ clinical trials.
Read our Research
Science-backed

GHK-Cu, guided by experts

Get a flexible plan with clinician-guided care, regular check-ins, unlimited provider messaging, and adjustments along the way.
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GHK-Cu Copper Peptide Cream

New
GHK-Cu Copper Peptide Cream

Support firmer, smoother-looking skin with a naturally occurring copper peptide that helps restore the repair and renewal processes that decline with age.

Starting at $99/ mo
Get Started Learn More

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Frequently asked questions

01 Is GHK-Cu FDA‑approved?

GHK-Cu (copper tripeptide-1) is not FDA‑approved to treat any medical condition. It’s widely used in cosmetic dermatology to support the appearance of the skin, and that’s how AgelessRx offers it.

02 What actually is GHK-Cu?

It’s a small peptide, three amino acids bound to a copper ion, that your body makes naturally. Levels are highest when you’re young and decline with age, which is part of why skin repairs more slowly over time.

03 How is GHK-Cu different from retinoids?

Unlike retinoids, GHK-Cu works by signaling your skin’s own repair and collagen pathways. Many people find it gentle and easy to layer into a routine. Follow the product guidance, and check with a provider if you have sensitive skin.

04 How will I know if GHK-Cu is working?

Most people track the look and feel of their skin, firmness, texture, and fine lines, over several weeks. Results build gradually and vary from person to person.

05 Who is GHK-Cu for?

Adults looking to support the appearance of firmer, smoother, more resilient skin, especially as natural peptide levels decline with age.

06 Can I use GHK-Cu with other skincare?

Often, yes. GHK-Cu is generally well tolerated, but some actives can interact, so follow the product guidance and check with a provider if you use prescription skincare.

Our idea of a bedtime story?
PubMed.

We vet everything on PubMed so you don’t have to. Here’s what the science says.
1
A review of the gene data behind GHK-Cu describes how the peptide supports skin repair and renewal, and how the body’s own GHK declines with age.
Int J Mol Sci, 2018
2
A review describes GHK as a natural peptide that signals multiple skin-regeneration pathways, supporting collagen, remodeling, and barrier repair.
BioMed Res Int, 2015
3
A review of peptides for aging skin, including GHK-Cu, found evidence for improved firmness, elasticity, and skin resilience in clinical studies.
Biomolecules, 2025
4
A laboratory study found copper-free GHK helped recover skin stem‑cell activity, supporting the skin’s renewal capacity.
J Pept Sci, 2012
5
A laboratory study found copper-GHK increased renewal markers in skin cells, including integrin and p63 in keratinocytes.
Arch Dermatol Res, 2009