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While the research base is smaller than GHK-Cu, it's more targeted to hair applications

(J Orthop Res 2006) demonstrated a significant improvement in the biomechanical strength, stiffness, and elasticity modulus of the Achilles tendon in rats after detachment

Gene Expression Modulation Transcriptomic analyses in cellular models have shown that GHK-Cu influences expression of a remarkably wide set of genes, with reported effects on pathways involved in: Extracellular matrix remodeling DNA repair Antioxidant response Inflammatory signaling Stem cell signaling markers This broad transcriptional footprint has been one of the most studied aspects of GHK-Cu in recent years

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