How to Use GHK-Cu
Complete guide to GHK-Cu dosing, administration, timing, and protocol recommendations.
Quick Overview
GHK-Cu is the copper(II) complex of GHK, a naturally occurring human tripeptide (glycyl-L-histidyl-L-lysine) found in blood plasma, saliva and urine, whose levels decline with age. It is researched and widely used in cosmetic skincare for skin regeneration, wound healing, collagen support and anti-aging. It is not an FDA-approved drug; it appears in over-the-counter cosmetics and as a research or compounded peptide, with most human evidence coming from small topical-skincare studies.
Dosing Guidelines
Common Dose
1-2 mg daily (injection) or 0.05% topical
Frequency
Once daily
Dose Range
0.5-3 mg daily
Note: Most clinical evidence is for topical use (0.05% concentration). Can be injected subcutaneously or used topically for skin/hair. Copper peptide with wound healing and anti-aging properties.
Administration Method
Subcutaneous injection or topical application
Best Time to Take
Evening (for skin/recovery)
GHK-Cu supports tissue repair which occurs primarily during sleep. Evening use may enhance overnight recovery.
Protocol Duration
Varies by application
Possible Side Effects
Not everyone experiences these. Individual responses vary.
- •Generally well-tolerated
- •Topical: mild skin irritation, redness, or tingling
- •Injectable: injection site reactions
- •May trigger histamine release - use caution with MCAS or histamine sensitivity
- •Risk of copper toxicity with excessive use
Frequently Asked Questions
What is the recommended dose for GHK-Cu?
1-2 mg daily (injection) or 0.05% topical
How do you administer GHK-Cu?
Subcutaneous injection or topical application
When is the best time to take GHK-Cu?
Evening (for skin/recovery)
How long should you use GHK-Cu?
Varies by application
This information is for educational purposes only. Always consult with a healthcare professional before using any peptide. Dosing information is based on research literature and community reports, not medical advice.