# GHK-Cu

> GHK-Cu is a naturally occurring copper-binding tripeptide first identified in human plasma, where its levels are known to decline with age. It has been studied for decades for its apparent role in stimulating collagen and elastin synthesis, supporting wound healing, and promoting skin remodeling. Research spans both topical cosmetic applications and subcutaneous use in tissue-repair contexts. GHK-Cu is one of the more extensively studied peptides in dermatological and wound-care literature. Findings suggest broad tissue-remodeling activity beyond skin, including potential antioxidant and anti-inflammatory properties.

- URL: https://www.lifeconverted.com/peptides/ghk-cu
- Also known as: Copper Peptide GHK-Cu
- Primary category: Healing & Recovery
- Effectiveness rank: #3 in Healing & Recovery; #8 in Immune & Anti-Aging; #1 in Skin & Cosmetic
- Evidence level: Well studied
- Route: Subcutaneous (Also widely used topically in cosmetic formulations for skin applications; subcutaneous injection is more common in systemic research contexts.)
- Dose range: 1-3 mg
- Dose tiers: low 1 mg; moderate 2 mg; high 3 mg
- Half-life: Short systemic half-life of approximately 30 minutes; topical formulations act locally over longer periods
- Timing: Evening
- Cycle: 4-8 weeks on, 2-4 weeks off (Topical use is often continuous, while subcutaneous protocols are commonly cycled.)
- Storage: Store lyophilized peptide frozen or refrigerated; topical formulations should be stored per manufacturer guidance, typically at room temperature away from light.

## Mechanism of action

GHK-Cu is thought to activate copper-dependent enzymes involved in collagen and elastin cross-linking, supporting extracellular matrix remodeling. Research suggests it may also modulate gene expression related to tissue repair, antioxidant defense, and anti-inflammatory signaling. These combined actions are proposed to underlie its studied effects on skin firmness, wound closure, and hair follicle activity.

## Reported benefits

- Studied for stimulating collagen and elastin synthesis
- Investigated for skin firmness and wrinkle appearance support
- Explored for wound healing acceleration
- Studied for antioxidant and anti-inflammatory activity
- Reported in research for hair follicle stimulation

## Reported side effects

- Skin irritation with topical use
- Injection site reaction with subcutaneous use
- Temporary redness
- Rare allergic reaction related to copper

## Common protocols

- 2 mg subcutaneous once daily for tissue-repair research
- Topical serum applied once or twice daily for skin research

## Stacking notes

Frequently paired with other healing peptides such as BPC-157 in skin- and wound-focused research protocols.

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