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Skin Repair Pathways MMP/TIMP, Collagen & Elastin (PMC, 2015) A focused review of GHK as a modulator of multiple skin regeneration pathways published in PMC confirmed that GHK-Cu stimulates both synthesis and breakdown of collagen and glycosaminoglycans, and modulates the activity of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs)

Search co-occurrence reflects shared research interest, not mechanistic overlap

Used together, the theory is that one addresses the immediate injury environment while the other supports the wider recovery process relevant for post-surgical recovery, athletic injury rehabilitation, chronic pain conditions, and general joint health and mobility

Days 1-3: Possible early reduction in inflammation and background pain Days 4-7: Noticeable decrease in pain intensity for many users Weeks 2-3: Improved grip strength and reduced activity-related pain Weeks 4-6: Significant functional improvement