What is GHK-Cu used for in research?

Research on GHK-Cu has focused on: Wound healing and skin regeneration; Anti-aging and collagen production; Hair growth stimulation; Anti-inflammatory properties; Improves skin elasticity and firmness; Reduces wrinkles and fine lines; Supports tissue remodeling.

What is the typical dose of GHK-Cu?

Typical research doses are 1-3 mg (injectable) or 1-3% (topical) mg, administered 2-3x/week (injectable) or daily (topical). Commonly timed: Flexible for injectable, topical applied to clean skin. These are research figures only — not clinical recommendations.

What are the known side effects of GHK-Cu?

Side effects reported in research include: Injection site redness or mild erythema (common, mild); Localized itching or tingling (common, mild); Temporary injection site swelling (uncommon, mild); Mild facial flushing (systemic injection) (uncommon, mild); Headache (uncommon, mild); Hypersensitivity reactions (rare, moderate); Topical irritation or sensitization (uncommon, mild); Copper accumulation concerns (long-term systemic use) (rare, moderate); Lipodystrophy or lipoatrophy (rare, moderate); Unexpected hair growth acceleration (uncommon, mild). Always consult a qualified professional before use.

How is GHK-Cu administered?

GHK-Cu is typically administered via Subcutaneous or Topical.

Can GHK-Cu be injected?

In the research literature, GHK-Cu is described with subcutaneous or topical administration. This is research information only, not medical advice.

What is the evidence quality for GHK-Cu?

GHK-Cu carries an evidence grade of B. Grade B — supported by human observational studies or smaller trials.

Skin & Anti-Aging / Subcutaneous / Topical

GHK-Cu

Also known as Copper Peptide, GHK-Copper, Glycyl-L-Histidyl-L-Lysine-Copper

GHK-Cu is a naturally occurring copper complex that plays multiple roles in wound healing, skin regeneration, and anti-aging. It can be used both topically and systemically. Copper peptides stimulate collagen and elastin production.

What is GHK-Cu used for? Research has focused on wound healing and skin regeneration; anti-aging and collagen production; hair growth stimulation.

Compare with other peptides studied forrecovery and healing,skin health,longevity and anti-aging

Evidence grade BResearch only

GHK-Cu injection at a glance

Figures from the published research literature. Research use only.

Dose range: 1-3 mg (injectable) or 1-3% (topical)
Route: Subcutaneous, Topical

How often, when, and the dosing notes are in the dosing reference further down.

Work out your units in the free calculator

Beginner basics

Plain-English guide to GHK-Cu

What it does: GHK-Cu is a natural copper compound that tells your body to make more collagen and elastin (the proteins that keep skin firm and elastic). Researchers use it to improve skin healing, reduce signs of aging, and stimulate hair growth.
Typical dose: For injection: 1-3 mg per dose, 2-3 times per week under the skin. For topical: apply a 1-3% solution daily to clean skin.
When to inject: Injectable timing is flexible-pick a consistent schedule that works for you. Topical can be applied anytime to clean skin, usually morning or night.
Storage: Keep injectable powder in the refrigerator. Once mixed with liquid, refrigerate it. Topical cream stays stable at room temperature.
Beginner tip: Start with the lower end of the dose range (1 mg injections or 1% topical) to see how your body responds before increasing.

Research status

Evidence grade B: Smaller human trials, observational studies, or approved in 30 or more countries.
Research only: No regulatory approval in any major jurisdiction. Research use only.

Well-researched, used in cosmetic products

For research purposes only. Not approved for human use. Not medical advice.

Research areas

Wound healing and skin regeneration
Anti-aging and collagen production
Hair growth stimulation
Anti-inflammatory properties
Improves skin elasticity and firmness
Reduces wrinkles and fine lines
Supports tissue remodeling

Side effects

Effect	How often	Severity
Injection site redness or mild erythemaTypically resolves within 24-48 hours. Related to injection trauma rather than peptide toxicity. Can be minimized with proper injection technique and site rotation.	Common	Mild
Localized itching or tinglingMay occur at injection site or systemically. Usually transient and resolves within hours. May indicate local inflammatory response or histamine release.	Common	Mild
Temporary injection site swellingSwelling typically subsides within 24-72 hours. Can be managed with ice application for 10 minutes post-injection.	Uncommon	Mild
Mild facial flushing (systemic injection)May occur due to vasodilation from peptide signaling. Typically mild and temporary, lasting minutes to hours.	Uncommon	Mild
HeadacheRare systemic effect, possibly related to rapid signaling cascade activation. Usually resolves within hours.	Uncommon	Mild
Hypersensitivity reactionsCould manifest as rash, urticaria, or localized edema in sensitive individuals. Discontinue use and seek medical attention if occurs.	Rare	Moderate
Topical irritation or sensitizationMay occur with topical application in individuals with sensitive skin. Reduce frequency or discontinue if irritation develops.	Uncommon	Mild
Copper accumulation concerns (long-term systemic use)Theoretical risk with chronic high-dose systemic use. Copper is essential at physiological levels but toxic at excessive levels. Not typically a concern with recommended dosing protocols. Monitor for signs of copper toxicity (neurological symptoms, liver dysfunction) with extended use.	Rare	Moderate
Lipodystrophy or lipoatrophyPossible with improper injection technique or repeated injections at identical sites. Preventable with proper site rotation. Peptide itself is not lipotoxic when properly administered.	Rare	Moderate
Unexpected hair growth accelerationGHK-Cu promotes hair follicle growth; may stimulate growth in unexpected areas with systemic use. Effects typically reverse upon discontinuation.	Uncommon	Mild

Dosing reference

Dose scale from the research

Starting: 1 mg
Typical: 2 mg
Upper end: 3 mg

GHK-Cu dosing reference
Parameter	Value
Dose range	1-3 mg (injectable) or 1-3% (topical)
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Checked October 2026

Research disclaimer. Figures are drawn from published research literature and community logs. They are not clinical recommendations. Consult a qualified professional. Research use only.

Reconstitution guide

Do not use saline or bacteriostatic saline, use only bacteriostatic water for reconstitution
Do not shake the vial vigorously; gentle swirling prevents peptide degradation
Discard immediately if the solution appears cloudy, discolored, or contains visible particles
Use within 30 days of reconstitution when stored at 2-8°C
Do not freeze the reconstituted solution; freezing may denature the peptide
Use the PeptideVolt reconstitution calculator for your exact concentration

Worked example

With 1 mg in the vial, the water you add changes the draw. Mixed with 1 mL that is 1,000 mcg per mL, so on a U-100 syringe 1 mg is 100 units and 3 mg is 300 units. Mixed with 2 mL it is 500 mcg per mL, so 1 mg is 200 units and 3 mg is 600 units.

Work out your exact dose in the free peptide calculator

Storage and stability

Refrigerate injectable form. Topical stable at room temperature.

Molecular and pharmacological data

Molecular weight	approximately 404 Da
Half-life	Estimated 1-2 hours for free peptide; longer when complexed with copper and in tissue distribution
Sequence	Members only

GHK-Cu is a naturally occurring copper-peptide complex that functions as a signaling molecule and antioxidant to stimulate collagen synthesis, enhance elastin production, and promote tissue remodeling. It works by activating growth factor pathways and improving wound healing through multiple cellular mechanisms including angiogenesis (blood vessel formation) and dermal remodeling.

Pathways and mechanism detail are for members

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Recent research

All results on PubMed

Source: PubMed / NCBI. Updated daily. Articles are listed for research reference only.

Research citations

2 sources

GHK peptide in wound healing and tissue remodeling
Copper peptides in skin anti-aging

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GHK-Cu in blends

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Research use only. All content on this page is provided for informational and educational purposes related to scientific research. GHK-Cu is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.