GHK-Cu
Also known as: Copper peptide · Copper tripeptide-1 · GHK copper
A naturally occurring copper-binding tripeptide best known in skincare for its role in collagen support, skin remodeling, and hair-related research.
Class
Copper-binding peptide
Default unit
mg
Common route
Subcutaneous or topical
Typical half-life
Short (minutes in plasma)
Frequency
Varies by use
Commonly associated areas
Illustrative map of the body systems GHK-Cu is most often discussed in relation to. Relative emphasis only — not a measure of efficacy or a medical claim.
Proposed mechanisms / pathways
What is GHK-Cu?
GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine bound to a copper ion). Levels in the body decline with age, which is part of why it draws interest in the context of skin remodeling and regeneration. It is one of the most studied peptides in cosmetic science and appears in many topical skincare formulations, as well as being used in injectable form.
How it is thought to work
GHK-Cu’s headline mechanism is delivering copper, a cofactor your body uses in collagen and elastin production. It is also discussed in relation to modulating the enzymes that break down the skin’s support matrix, and for antioxidant activity. The combined idea is support for the skin’s repair and remodeling machinery — which, like everything here, is a proposed mechanism rather than a guaranteed outcome.
Educational only — not medical advice
GHK-Cu is used cosmetically and in research; this is not a recommendation, dose, or medical claim. Patch-test topicals, and consult a qualified professional before any injectable use. Follow the laws in your area.
Tracking a GHK-Cu protocol
Skin and hair changes are slow and easy to misjudge from memory, which makes GHK-Cu a great candidate for photo-based tracking. Log the dose and route, attach consistent, well-lit progress photos at regular intervals, and let the visual timeline do the work. Months apart, side-by-side photos tell you far more than a daily impression in the mirror.
Commonly discussed for
- Skin firmness, tone, and collagen support
- Wound and tissue repair
- Hair and scalp research
Often stacked: Often discussed in cosmetic stacks; topical and injectable forms are used for different goals.
How to track GHK-Cu in LynkDose
For aesthetic goals, pair your log with photos. Tracking dose, route (topical vs injectable), and dated progress pictures makes slow skin and hair changes visible over months.
Deeper read: How to Track a Peptide Cycle: A Complete Guide
Not medical advice
This page is educational and does not recommend, prescribe, or dose any compound. Many peptides are research chemicals not approved for general human use. Always consult a qualified healthcare provider and follow the laws in your area.