{"title":"Anti-ageing","description":"","products":[{"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"},{"product_id":"advanced-thd-vitamin-c-serum","title":"Advanced THD Vitamin C Serum","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStable daily Vitamin C. Water-free formula. No irritation. 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. 6 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_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\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\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\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 Serum Does\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Advanced THD Vitamin C Serum delivers stable, oil-soluble Vitamin C deep into the skin's lipid layers — where it converts to active Vitamin C and gets to work supporting collagen, evening skin tone and improving overall skin quality over time.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUnlike traditional Vitamin C serums, it does not oxidise, does not irritate and does not turn orange in the bottle. It absorbs quickly, leaves no greasy residue and works consistently — every single day.\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\"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 THD Vitamin C Serum · Week 6 (still using at Week 10)\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 THD Vitamin C Serum · 8 weeks\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\"Skin feels smoother and my lines feel less pronounced. Skin tone feels better.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eJude\u003c\/strong\u003e\u003cbr\u003eAdvanced THD Vitamin C Serum · 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 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, more even skin tone with consistent use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSmoother skin texture from the first few weeks\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\"\u003eReduced redness and a calmer, more settled complexion\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 working every day\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 degrade before it reaches your skin\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYour skin is sensitive and previous Vitamin C serums have caused irritation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou care deeply about what goes on your skin and won't compromise on ingredients\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're ready to commit to a clean, clinical daily Vitamin C that builds results over time\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) solves this. It is oil-soluble, highly stable and able to penetrate into the skin's lipid layers — where it converts to active Vitamin C and delivers the same skin benefits as L-Ascorbic Acid without the instability and irritation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNo degradation. No irritation. No orange residue. Just stable, active Vitamin C — every day.\u003c\/p\u003e","brand":"Intrinsic Skincare UK","offers":[{"title":"Default Title","offer_id":54258796265814,"sku":null,"price":32.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/VitC4.jpg?v=1781898638"},{"product_id":"vitamin-c-activation-system","title":"The Vitamin C Activation System","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003ePure L-Ascorbic Acid. Kept dry. Applied fresh. No degradation. 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.\u003c\/strong\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\/Week_10_Dale_1.png?v=1781902441\" alt=\"\"\u003e\u003cbr\u003e\u003cem\u003eDale · The Complete Vitamin C System · Baseline · Week 6 · Week 10 · 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\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/Stats.png?v=1781729272\" alt=\"\"\u003e\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\/Stats_2.png?v=1781729742\" alt=\"\"\u003e\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\u003eWhat This System Does\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Vitamin C Activation System keeps 100% pure L-Ascorbic Acid completely dry and separate until the moment you use it. Mix the Activation Powder with the Activation Booster immediately before application and you deliver freshly activated Vitamin C to your skin at full potency — something no pre-mixed serum can offer.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUsed alongside the Advanced THD Vitamin C Serum, this is the complete Intrinsic Vitamin C protocol.\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\"My skin is softer and smoother. I have really enjoyed using both the serum and the booster — they feel really good and my skin enjoys the feel of them.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eMelissa\u003c\/strong\u003e\u003cbr\u003eVitamin C Activation System · 8 weeks\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003e\"Skin feels smoother and my lines feel less pronounced. Skin tone feels better.\"\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eJude\u003c\/strong\u003e\u003cbr\u003eVitamin C Activation System · 8 weeks\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\u003eVitamin C Activation 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 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\"\u003eA fresh, clean sensation at the moment of application\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBrighter, more even skin tone with continued use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSmoother texture and softer fine lines over time\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLighter appearance of pigmentation and sun spots\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe confidence of knowing your Vitamin C is at maximum potency every single time\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 the proven power of L-Ascorbic Acid without the degradation problem\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou already use the Advanced THD Vitamin C Serum and want to take your results further\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou are serious about your skincare and want a protocol that goes beyond a basic serum\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou want visible results that build progressively over time\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYou won't compromise on ingredient quality or formula integrity\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 FRESH ACTIVATION MATTERS\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. The research is clear — it supports collagen production, reduces pigmentation, protects against oxidative damage and improves overall skin quality.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe problem is stability. The moment L-Ascorbic Acid is mixed with water, it begins to oxidise and lose potency. By the time a traditional serum reaches your skin — weeks or months after it was manufactured — a significant proportion of the active ingredient has already degraded.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Intrinsic Activation System solves this completely. The Powder is 100% pure L-Ascorbic Acid, kept completely dry in an airtight container. The Booster is the lightweight activation vehicle. Mix them immediately before application and you get freshly activated Vitamin C at full potency — every time, without exception.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNo degradation. No compromise. Just Vitamin C that actually does what Vitamin C is supposed to do.\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 \u003c\/p\u003e","brand":"Intrinsic Skincare UK","offers":[{"title":"Default Title","offer_id":54259149701462,"sku":null,"price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/files\/VitC4.jpg?v=1781898638"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/6574\/7798\/collections\/Anti_Ageing_square_9f68c495-a129-46af-a5c7-1a19cc0c4a1d.jpg?v=1782077349","url":"https:\/\/www.intrinsicshop.co.uk\/collections\/anti-ageing.oembed","provider":"Intrinsic Skincare UK","version":"1.0","type":"link"}