{"product_id":"ghk-cu-overnight-wrapping-mask","title":"GHK-Cu Overnight Wrapping Mask","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eCollagen masks can't penetrate your skin. GHK-Cu can. Our 1% clinical-strength copper peptide absorbs overnight and triggers your skin to produce its own collagen from within, where regular collagen masks and serums can't reach.\u003c\/p\u003e\n\u003cp\u003eBacked by a self-test study, our GHK-Cu Collagen Wrapping Mask delivered visible improvements in skin hydration, firmness, and overall barrier health.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e+31.4% increase in skin elasticity (after 2 weeks)\u003c\/li\u003e\n\u003cli\u003e-4.5% reduction in trans-epidermal water loss (after 2 weeks)\u003c\/li\u003e\n\u003cli\u003e+24.8% improvement in 24-hour moisture retention (after just 1 use)\u003c\/li\u003e\n\u003cli\u003e+23.4% boost in surface hydration (after 2 weeks)\u003c\/li\u003e\n\u003cli\u003e+2.9% increase in deep hydration (after 2 weeks)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Seoul Sundays","offers":[{"title":"Default Title","offer_id":67581551804590,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9251\/2430\/files\/Screenshot2026-09-26at8.28.51pm.png?v=1790440139","url":"https:\/\/seoulsundays.com\/products\/ghk-cu-overnight-wrapping-mask","provider":"Seoul Sundays","version":"1.0","type":"link"}