{"product_id":"ghk-cu-serum","title":"Koppā GHK-Cu 2% Serum","description":"\u003cp\u003eA lightweight, fast-absorbing serum delivering a clinical 2% concentration of GHK-Cu copper peptides across the full face. Formulated for maximum bioavailability at 340 Daltons — well below the 500 Da skin penetration threshold — so the peptide actually reaches the fibroblast layer where collagen synthesis happens.\u003c\/p\u003e\u003cp\u003eGHK-Cu was first identified in 1973 when researchers discovered that older tissue exposed to young plasma began behaving like young tissue again. The active factor was GHK-Cu. A landmark 2012 study found it influences the expression of over 4,000 human genes — upregulating repair, collagen synthesis, and antioxidant defense while downregulating inflammation.\u003c\/p\u003e\u003cp\u003eAt 2% concentration, this serum delivers a meaningful clinical dose with every application. This is not a trace amount listed for label appeal — it is a formulation designed to work.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2% GHK-Cu concentration — clinical-strength dosing\u003c\/li\u003e\n\u003cli\u003e340 Dalton molecular weight — penetrates the stratum corneum\u003c\/li\u003e\n\u003cli\u003eUpregulates collagen I, III, and antioxidant defense (SOD)\u003c\/li\u003e\n\u003cli\u003eLightweight, non-sticky, absorbs in seconds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFull Ingredients:\u003c\/strong\u003e Aqua (Water), Glycyl-L-Histidyl-L-Lysine:Cu²⁺ Complex (GHK-Cu) 2%, Glycerin, Sodium Hyaluronate, Panthenol, Niacinamide, Allantoin, Carbomer, Sodium Hydroxide. pH 5.0–5.5. Free from: synthetic fragrance, parabens, silicones, PEGs.\u003c\/p\u003e","brand":"Koppā","offers":[{"title":"30ml","offer_id":46861568639164,"sku":"CUP-SIG-001","price":64.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8691\/5772\/files\/koppa-ghk-cu-2-percent-serum-dropper-bottle.png?v=1783900738","url":"https:\/\/koppabeauty.com\/products\/ghk-cu-serum","provider":"Koppā","version":"1.0","type":"link"}