What is GHK-Cu and what does it do?

GHK-Cu (Glycyl-L-Histidyl-L-Lysine-Copper) is a naturally occurring tripeptide that binds copper ions. It

What is the standard injectable GHK-Cu dosage?

The standard injectable dose is 1-2 mg subcutaneously, administered 2-5 times per week (most commonly 3x weekly). Cycles typically run 4-12 weeks followed by equal time off. For wound healing or post-surgical recovery, daily dosing at 2 mg may be used for shorter durations (4-8 weeks).

How do I reconstitute GHK-Cu?

For a typical 50 mg vial: Add 3.0 mL bacteriostatic water for a concentration of 16.67 mg/mL. Alternatively, use 5 mL for 10 mg/mL (easier dosing calculations). Inject slowly along the vial wall, don

What concentration should I use for topical GHK-Cu?

For skincare: Start with 1% and work up to 2-3% for standard anti-aging. Clinical strength products range from 2-4%. For scalp/hair applications, 0.1-1% is typical. Avoid mixing with Vitamin C, AHAs/BHAs, or strong retinoids as these can destabilize GHK-Cu.

How long until I see results from GHK-Cu?

Timeline varies by application: Wound healing improvements can be seen within 1-2 weeks. Skin texture and quality improvements typically appear at 4-8 weeks. Significant anti-aging benefits (collagen, elasticity) may take 8-12 weeks of consistent use. Hair growth effects may require 3-6 months.

Where should I inject GHK-Cu?

Common injection sites include the abdomen (most popular), thigh, and upper arm. Rotate sites systematically to prevent lipohypertrophy. Clean the site with alcohol, let air-dry, inject slowly subcutaneously, wait 5-10 seconds before withdrawing the needle.

Can I use GHK-Cu with other peptides?

Yes, GHK-Cu is commonly stacked with other skin and healing peptides. Popular combinations include: GHK-Cu + KPV (anti-inflammatory), GHK-Cu + BPC-157 (healing), GHK-Cu + TB-500 (tissue repair). Consult a healthcare provider before combining multiple peptides.

GHK-Cu is generally well-tolerated with minimal side effects. Injectable side effects are typically limited to mild injection site reactions (redness, itching). Contraindications include pregnancy/breastfeeding, active cancer, autoimmune disorders, and use of immunosuppressants. Always use under medical supervision.

PeptideKey Research Library

GHK-Cu: How Copper Peptides Boost 40% Collagen + Heal

Understand GHK-Cu peptide dosage for research [2026]. Explore its uses, potential benefits for skin & beauty, and crucial safety notes to guide your studies effectively.

This research guide is part of PeptideKey's evidence-based peptide research library covering 100+ compounds with lab-verified purity data.