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A separate 2025 narrative review by McGuire and colleagues asked a blunter question in its title: "Regeneration or Risk?" [2] Their conclusion: the preclinical evidence is consistently positive, but the absence of human data makes it impossible to generate evidence-based practice guidelines

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CLINICALLY PROVEN RESULTS 94% had visibly improved discolouration 91% had brighter-looking skin 0% reported irritation* *Based on an independent clinical study with 32 subjects after 8 weeks Find out if this formula works for you

AHK (alanyl-histidyl-lysine), which substitutes alanine for glycine at the N-terminal position, is the closest structural relative and forms a similar copper complex