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If it persists, its best to consult a healthcare professional
Selected Research Highlights Skin Regeneration: GHK-Cu has been studied in creams, solutions, and injectable formats (research/clinical) for effects on wrinkles, elasticity, and overall skin appearance, often compared with retinoids or other actives
The longest rodent toxicology study (90 days) found no organ damage, hepatotoxicity, or nephrotoxicity at doses up to 50mg/kg daily, establishing a NOAEL well above human trial doses
Which single data gap (PK, dose-ranging efficacy, or long term safety) would most change your stance if answered convincingly
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