HealingSkin

GHK-Cu

Tripeptide-copper complex · 3 amino acids · Plasma-derived sequence

FDA · NOT REVIEWED (COSMETIC USE)

Half-life

~45 minutes

Very short

minsdays

Route

SubQ injection

Evidence

Preclinical only

Risk

Standard

Overview

Known for

Copper tripeptide. Powerful skin regeneration, collagen/elastin synthesis, wound healing, anti-aging, and hair follicle stimulation. Naturally occurs in human plasma but declines with age. Reduces wrinkles, improves skin density and elasticity.

Mechanism

Naturally occurring copper peptide (declines with age: 200ng/mL age 20 → 80ng/mL age 60). Promotes collagen, elastin, wound healing, hair growth, anti-inflammatory.

Key facts

Format
Lyophilized powder
Mechanism targets
Classification
Secondary
Supply & nature
Natural / Topping UpNatural
FDA category
Not reviewed (cosmetic use)

Evidence & standing

Evidence base
Preclinical only
Risk level
Standard
Best studies
6 references
  • Pickart et al. (2012) Oxid Med Cell Longev 2012:324832 — Anti-aging and cognitive implications
  • Pickart et al. (2015) Int J Mol Sci 16(9):20448-74 — Skin remodeling
  • Kang et al. (2009) J Invest Dermatol 129:1295-1300 — Wound healing
  • NOT FDA APPROVED (injectable)
  • Widely used in topical skincare (cosmetic formulations)
  • Naturally occurring — declines from ~200ng/ml (age 20) to ~80ng/ml (age 60)

Dosage & protocol

Typical dose
200-600mcg/day
Research range
0.5–2 mg
Cycle
4 weeks on / 2 weeks off
Onset
35 days first effects
Full effect
126 days
Half-life
~30-60min
Plasma half-life ~30-60 min; biological effects on gene expression persist 24-48h
Protocol

200-600mcg/day SubQ for systemic. Also available topically. Can go up to 1-2mg/day in some protocols.

Time to effects

EARLY: 4-6 weeks

FULL: 12-24 weeks

GHK-Cu works through collagen remodelling, which is inherently SLOW.

Week 2-4: No visible changes yet. Cellular-level collagen synthesis increasing.

Week 4-8: Skin may start feeling firmer. Wound healing improved. Hair may feel thicker.

Week 8-12: Visible skin improvements — reduced fine lines, improved elasticity, better tone.

Week 12-24: Significant skin rejuvenation. Hair regrowth/thickening where applicable. Scar tissue softening.

Patience required. This is a long-game peptide. Minimum commitment: 12 weeks for skin. 6+ months for hair.

Recommended vial

⚠️ 50mg vials (lesser problem)

At 500mcg/day, 50mg = 100 days — FAR exceeds shelf life. At 2mg/day = 25 days ✓. Increase dose or accept potency loss. 100mg is even worse.

Reference figures only

Dosing reflects published laboratory protocols and is not guidance for use in any living subject.

Safety

Reversibility
Fully Reversible
Side effects

Topical: skin irritation/redness (rare, usually at high concentrations). Injectable: injection site reaction, metallic taste.

Interactions

Other copper supplements (avoid excess copper intake), iron (copper-iron interaction)

Do not combine
GLOW Blend (BPC 10mg + TB 10mg + GHK-Cu 50mg)GLOW Blend (BPC 10mg + TB 10mg + GHK-Cu 50mg) KLOW Blend (BPC 10mg + TB 10mg + GHK-Cu 50mg + KPV 10mg)KLOW Blend (BPC 10mg + TB 10mg + GHK-Cu 50mg + KPV 10mg)

Handle with research caution

  • Do NOT use if Wilson's disease or copper metabolism disorder
  • Avoid if active cancer/tumour history (promotes angiogenesis and cell proliferation)

Storage & handling

Lyophilised
12–24 months
2–8°C
Reconstituted
4–6 weeks
2–8°C

Videos & talks

Independent educational content from researchers, clinicians and science communicators — not affiliated with Pepnerd.

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