{"product_id":"complete-vitamin-c-system","title":"The Complete Vitamin C System","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStable daily Vitamin C. Freshly activated Vitamin C. One clean, clinical system.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNo fillers. No irritants. No compromise.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReal Results. Real People. 8 Weeks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Week_8_Wendy.webp?v=1781728703\" alt=\"\"\u003e\u003c\/em\u003e\u003cbr\u003e\u003cem\u003eWendy · Advanced THD Vitamin C Serum · 8 weeks · No filters\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Week_8_Dale.webp?v=1781728704\" alt=\"\"\u003e\u003c\/em\u003e\u003cbr\u003e\u003cem\u003eDale · Advanced THD Vitamin C Serum · Week 6 · No filters\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Week_8_Allison.webp?v=1781728703\" alt=\"\"\u003e\u003c\/em\u003e\u003cbr\u003e\u003cem\u003eTrial Participant · Advanced Vitamin C System · 8 weeks · No filters\u003c\/em\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eTrial Results\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e8-week independent trial \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Stats.png?v=1781729272\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Stats_2.png?v=1781729742\" alt=\"\"\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat This System Does\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Intrinsic Advanced Vitamin C System combines two forms of Vitamin C into one integrated daily protocol — stable THD Ascorbate for consistent daily protection, and freshly activated L-Ascorbic Acid for periodic potency. The result is brighter, smoother, more even-looking skin without a single ingredient you would want to avoid.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat Our Trial Participants Said\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\"Brighter and smoother — my skin tone is so much more even and calmer. The redness I'd had for years just settled down.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eWendy\u003c\/strong\u003e\u003cbr\u003eAdvanced Vitamin C System · 8 weeks\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\"Reduced sunspots, skin feels smoother. Very happy — easy to use, and some visible results.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eDale\u003c\/strong\u003e\u003cbr\u003eAdvanced Vitamin C System · Week 6 (still using at Week 10)\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\"Fine lines have softened — jaw and neck lines have improved.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eTrial Participant\u003c\/strong\u003e\u003cbr\u003eAdvanced Vitamin C System · 8 weeks\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdvanced THD Vitamin C Serum — daily stable Vitamin C in a water-free oil base\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVitamin C Activation Booster — the lightweight vehicle for fresh activation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVitamin C Activation Powder — 100% L-Ascorbic Acid, kept dry until the moment of use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhy This System Is Different\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMost Vitamin C serums ask you to choose between stability and potency. L-Ascorbic Acid is the most researched form but degrades the moment it is mixed with water. Stable alternatives like THD are gentler and longer-lasting but traditionally lack the clinical backing of L-Ascorbic Acid.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Intrinsic system does not make you choose. The THD Serum gives you stable daily Vitamin C that works with your skin barrier. The Activation System gives you freshly mixed L-Ascorbic Acid — at full potency, every time — when your skin needs more.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eTwo forms. One clean system. No compromise.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWHAT YOUR SKIN WILL FEEL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBrighter and more even-looking skin tone\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSmoother skin texture from consistent use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSofter appearance of fine lines over time\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDaily antioxidant protection against environmental stressors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eConfident that your Vitamin C is stable, clean and actually working\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eTHIS IS FOR YOU IF:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou want Vitamin C that doesn't oxidise in the bottle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou have ingredient-conscious skin and won't compromise on what you apply\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou want visible results without aggressive formulations\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou prefer clean, clinical skincare that works progressively over time\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou want a complete Vitamin C protocol, not just another serum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWHY THD OVER TRADITIONAL VITAMIN C?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eL-Ascorbic Acid is the most extensively studied form of Vitamin C in skincare — but it is notoriously unstable in water-based formulas. The moment it is mixed with water, it begins to oxidise and lose potency. Many serums are already significantly degraded by the time they reach your skin.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eTetrahexyldecyl Ascorbate (THD) is oil-soluble, highly stable and able to penetrate into the skin's lipid layers where it converts to active Vitamin C. It does not oxidise, does not irritate and does not turn orange in the bottle. The Activation Powder addresses the potency question by keeping 100% pure L-Ascorbic Acid completely dry until the moment of application — delivering Vitamin C at full potency, every time.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eTwo forms. One clean system. No compromise.\u003c\/p\u003e","brand":"Intrinsic Skincare UK","offers":[{"title":"Default Title","offer_id":54232265621846,"sku":null,"price":49.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/VitC4.jpg?v=1781898638","url":"https:\/\/www.intrinsicshop.co.uk\/products\/complete-vitamin-c-system","provider":"Intrinsic Skincare UK","version":"1.0","type":"link"}