Ingredient or product comparison
GHK-Cu Cosmetic Animal vs Human Research: Side-by-Side Comparison
This table synthesizes key findings from animal versus human trials across the most commonly cited outcomes in GHK-Cu cosmetic research: Collagen I Synthesis 200–300% increase (rodent, 72h topical) 18–22% increase (human, 12 weeks topical) Animal: 3 days; Huma
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- This table synthesizes key findings from animal versus human trials across the most commonly cited outcomes in GHK-Cu cosmetic research:
- Collagen I Synthesis
- 200–300% increase (rodent, 72h topical)
- 18–22% increase (human, 12 weeks topical)
- Animal: 3 days; Human: 84 days
- Animal models compress wound-healing timelines—human results are slower but histologically confirmed
- MMP-1 Inhibition
- 60–75% reduction (mouse, UV model, 28 days)
- 30–40% reduction (human, 8 weeks facial cream)
- Animal: 4 weeks; Human: 8 weeks
- Both show MMP-1 suppression, but human baseline MMP-1 is higher due to chronic photodamage
- Elastin Fiber Density
- 55% improvement (hairless mouse, 6 weeks)
- 22% improvement (human, 12 weeks)
- Animal: 6 weeks; Human: 12 weeks
- Animal elastin turnover is faster—human results require longer sustained application
- Antioxidant (SOD) Activity
- 80% increase (rat dermal fibroblasts, 48h)
- 35% increase (human fibroblasts, 7 days culture)
- Animal: 2 days; Human: 7 days
- Copper-dependent SOD activation is conserved but slower in aged human cells
- Epidermal Thickness Gain
- 40 micrometers (mouse, 4 weeks topical)
- 14 micrometers (human, 12 weeks topical)
- Animal: 4 weeks; Human: 12 weeks
- Mouse epidermis is thinner and regenerates faster—human gains are proportionally smaller
- Wrinkle Depth Reduction
- 50% (rodent, silicone cast, 6 weeks)
- 20–28% (human, profilometry, 12 weeks)
- Visual improvement confirmed in both, but human skin has pre-existing deep rhytides from cumulative UV damage