{"title":"Vitamin C","description":"\u003cp\u003eVitamin C is your morning defence. A potent antioxidant that neutralises free radical damage, brightens skin tone, stimulates collagen, and enhances the efficacy of your SPF. These are the formulations we trust — stable, effective, clinically dosed.\u003c\/p\u003e","products":[{"product_id":"super-c-ferulic-30ml","title":"Super C Ferulic 30ml","description":"\u003cp\u003eMedik8 Super C Ferulic combines 15% pure L-ascorbic acid with ferulic acid and vitamin E — the research-proven antioxidant trio that doubles the photoprotective efficacy of vitamin C alone. Stabilised at an optimal pH of 2.5 for maximum absorption, this is Medik8's most potent vitamin C serum and the gold standard for patients serious about antioxidant defence.\u003c\/p\u003e\n\n\u003cp\u003eL-ascorbic acid is the most extensively studied form of topical vitamin C, with decades of clinical evidence supporting its ability to neutralise free radicals generated by UV exposure and pollution, inhibit tyrosinase to reduce hyperpigmentation, and stimulate collagen synthesis for firmer, more resilient skin. The addition of ferulic acid not only stabilises the formulation but amplifies the antioxidant activity by up to 8x, while vitamin E provides synergistic lipid-soluble protection.\u003c\/p\u003e\n\n\u003cp\u003eApply 2–3 drops each morning after cleansing and before SPF. The lightweight serum absorbs rapidly, leaving skin visibly brighter and more even-toned within weeks. As the cornerstone of the CSA philosophy (vitamin C + Sunscreen + vitamin A), Super C Ferulic pairs perfectly with Crystal Retinal in the evening and broad-spectrum SPF during the day for a complete evidence-based anti-ageing protocol.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Experienced vitamin C users seeking maximum antioxidant potency. Anti-ageing, pigmentation, dull or sun-damaged skin. Not recommended as a first vitamin C — start with C-Tetra if you are new to actives.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63637584773469,"sku":"MED-SCF-30","price":69.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/Super_C_Ferulic_1_5053c5eb-e4dc-4e1d-83f9-4359a68cb838.jpg?v=1777331289"},{"product_id":"obagi-professional-c-10-serum-30ml","title":"Obagi Professional-C 10% Serum 30ml","description":"\u003cp\u003eObagi Professional-C 10% Serum delivers L-ascorbic acid at a concentration appropriate for patients with sensitive skin or those new to topical vitamin C. L-ascorbic acid is the biologically active form of vitamin C and the most extensively studied topical antioxidant — at 10%, it provides meaningful photoprotective and brightening benefits while remaining within the tolerance threshold of reactive or sensitised complexions. It functions as both a standalone antioxidant and as a preparatory step before advancing to higher concentrations.\u003c\/p\u003e\n\u003ch3\u003eWhat it does:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDelivers 10% L-ascorbic acid in a stable, low-pH vehicle — providing antioxidant defence against UV-induced free radical damage when used alongside SPF\u003c\/li\u003e\n\u003cli\u003eSupports collagen synthesis through fibroblast stimulation, contributing to firmer, more resilient skin over consistent long-term use\u003c\/li\u003e\n\u003cli\u003eInhibits tyrosinase activity, reducing melanin overproduction and gradually improving uneven skin tone and post-inflammatory discolouration\u003c\/li\u003e\n\u003cli\u003eEntry-level concentration minimises the tingling and transient erythema that higher-strength vitamin C can provoke in sensitised or reactive skin\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Patients with sensitive, reactive, or rosacea-prone skin who are introducing topical vitamin C for the first time, or those building toward higher-concentration formulations.\u003c\/p\u003e","brand":"Obagi Medical","offers":[{"title":"Default Title","offer_id":63637588115805,"sku":"OBA-PC10-30","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/serum-box.png?v=1777331573"},{"product_id":"obagi-professional-c-15-serum-30ml","title":"Obagi Professional-C 15% Serum 30ml","description":"\u003cp\u003eObagi Professional-C 15% Serum positions L-ascorbic acid at a mid-range concentration — offering greater antioxidant potency and faster photoprotective benefit than the 10% without the tolerance demands of the 20% formulation. It suits patients who have acclimatised to lower vitamin C concentrations and are ready to intensify their antioxidant and brightening programme. The same stable, low-pH delivery system ensures bioavailability without compromising product integrity.\u003c\/p\u003e\n\u003ch3\u003eWhat it does:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDelivers 15% L-ascorbic acid in a clinically validated vehicle — increasing antioxidant activity and photoprotection compared to the 10% formulation\u003c\/li\u003e\n\u003cli\u003eAccelerates collagen synthesis at a higher dose threshold, contributing to visible improvement in skin firmness, fine lines, and structural integrity\u003c\/li\u003e\n\u003cli\u003eEnhances melanin suppression through more sustained tyrosinase inhibition — producing faster and more pronounced brightening outcomes than lower concentrations\u003c\/li\u003e\n\u003cli\u003eSuitable as a progressive step for patients transitioning upward within the Professional-C range or seeking more efficient results from their antioxidant serum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Patients with normal to combination skin who have established tolerance to vitamin C and are targeting photodamage, dullness, or moderate hyperpigmentation with a clinically effective mid-strength formulation.\u003c\/p\u003e","brand":"Obagi Medical","offers":[{"title":"Default Title","offer_id":63637588410717,"sku":"OBA-PC15-30","price":145.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/ProC-Serum15_bottle-box_2015.png?v=1777331591"},{"product_id":"obagi-professional-c-20-serum-30ml","title":"Obagi Professional-C 20% Serum 30ml","description":"\u003cp\u003eThe strongest vitamin C serum Obagi makes. At 20% pure L-ascorbic acid in a stable, low-pH formulation engineered to penetrate the dermis, Professional-C 20% delivers the most potent antioxidant protection and brightening activity available in the range. This concentration sits at the upper threshold of what clinical research shows to be effective for topical vitamin C — beyond which additional concentration yields diminishing returns.\u003c\/p\u003e\n\u003ch3\u003eWhat it does:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum-strength antioxidant protection against UV-induced free radical damage\u003c\/li\u003e\n\u003cli\u003eVisible brightening and pigmentation correction, typically from 4 weeks of consistent use\u003c\/li\u003e\n\u003cli\u003eStimulates dermal collagen synthesis at the highest effective dose\u003c\/li\u003e\n\u003cli\u003eEnhances skin radiance, luminosity, and overall tone clarity\u003c\/li\u003e\n\u003cli\u003eSynergistic protection when paired with broad-spectrum SPF\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Experienced vitamin C users with normal to oily skin who have established tolerance at 10% or 15% and want the maximum clinical benefit. Particularly effective for patients targeting photodamage, stubborn pigmentation, and advanced collagen support. If 20% causes irritation, step back to the \u003ca href=\"\/products\/obagi-professional-c-15-serum-30ml\"\u003e15% formulation\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to use:\u003c\/strong\u003e Apply 5–7 drops to clean, dry skin each morning. Allow to absorb for 1–2 minutes before layering moisturiser and SPF. Store in a cool, dark place. Discard if the serum turns dark brown or orange.\u003c\/p\u003e","brand":"Obagi Medical","offers":[{"title":"Default Title","offer_id":63637588771165,"sku":"OBA-PC20-30","price":170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/ProC-Serums-Cartons_Group_BlackTops_2015.png?v=1777331587"},{"product_id":"medik8-c-tetra-30ml","title":"Medik8 C-Tetra 30ml","description":"\u003cp\u003e\u003cstrong\u003eA lipid-soluble vitamin C serum for antioxidant protection and radiance.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 C-Tetra is a lightweight, everyday vitamin C serum powered by tetrahexyldecyl ascorbate — a stable, lipid-soluble form of vitamin C that penetrates deeply into the skin. It delivers powerful antioxidant protection against environmental damage while brightening the complexion and supporting collagen production. The gentle, non-irritating formula makes it an ideal entry point into vitamin C skincare.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStable, lipid-soluble vitamin C for deep penetration\u003c\/li\u003e\n\u003cli\u003ePowerful antioxidant protection against free radicals\u003c\/li\u003e\n\u003cli\u003eBrightens and evens skin tone\u003c\/li\u003e\n\u003cli\u003eSupports natural collagen production\u003c\/li\u003e\n\u003cli\u003eGentle enough for vitamin C beginners\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply 2-3 drops to cleansed skin every morning before moisturiser and sunscreen. Can be mixed with other serums.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837040989,"sku":"P08875","price":45.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/C-Tetra_1.jpg?v=1777331482"},{"product_id":"medik8-c-tetra-cream-50ml","title":"Medik8 C-Tetra Cream 50ml","description":"\u003cp\u003e\u003cstrong\u003eA vitamin C-infused day cream for antioxidant protection and hydration.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 C-Tetra Cream combines the antioxidant power of tetrahexyldecyl ascorbate with a nourishing moisturiser in one step. This dual-action formula protects against environmental damage while deeply hydrating, making it perfect for those who want to simplify their morning routine without compromising on results.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eVitamin C + moisturiser in one product\u003c\/li\u003e\n\u003cli\u003eAntioxidant protection against daily environmental damage\u003c\/li\u003e\n\u003cli\u003eDeeply hydrating, comfortable texture\u003c\/li\u003e\n\u003cli\u003eSimplifies the morning routine\u003c\/li\u003e\n\u003cli\u003eSuitable for normal to dry skin types\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply to cleansed skin every morning. Follow with sunscreen. Replaces both serum and moisturiser steps.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837270365,"sku":"P08879","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/C-Tetra_Cream_1.jpg?v=1777331491"},{"product_id":"medik8-c-tetra-luxe-30ml","title":"Medik8 C-Tetra Luxe 30ml","description":"\u003cp\u003e\u003cstrong\u003eAn advanced lipid-soluble vitamin C serum with added anti-ageing benefits.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 C-Tetra Luxe takes the bestselling C-Tetra formula and elevates it with a richer, more nourishing blend. Combining tetrahexyldecyl ascorbate with vitamin E, turmeric extract and squalane, it delivers enhanced antioxidant protection alongside visible anti-ageing benefits. The luxurious oil-serum texture leaves skin radiant, plump and deeply nourished.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEnhanced vitamin C formula with vitamin E synergy\u003c\/li\u003e\n\u003cli\u003eTurmeric extract boosts brightening and calming\u003c\/li\u003e\n\u003cli\u003eSqualane provides deep nourishment\u003c\/li\u003e\n\u003cli\u003eVisible anti-ageing and radiance benefits\u003c\/li\u003e\n\u003cli\u003eLuxurious oil-serum texture\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply 2-3 drops to cleansed skin every morning before moisturiser and sunscreen.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837401437,"sku":"P08887","price":60.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/C-Tetra_Luxe_1.jpg?v=1777331495"},{"product_id":"medik8-c-tetra-advanced-30ml","title":"Medik8 C-Tetra Advanced 30ml","description":"\u003cp\u003e\u003cstrong\u003eThe most potent vitamin C serum in the C-Tetra range.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 C-Tetra Advanced is the pinnacle of the C-Tetra collection, delivering the highest concentration of tetrahexyldecyl ascorbate for maximum antioxidant power and visible results. Enhanced with a multi-antioxidant complex, it provides unparalleled protection against environmental aggressors while dramatically brightening, firming and rejuvenating the complexion.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHighest concentration vitamin C in the C-Tetra range\u003c\/li\u003e\n\u003cli\u003eMulti-antioxidant complex for superior protection\u003c\/li\u003e\n\u003cli\u003eDramatically brightens and firms\u003c\/li\u003e\n\u003cli\u003eTargets fine lines, dullness and uneven tone\u003c\/li\u003e\n\u003cli\u003eLightweight, fast-absorbing texture\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply 2-3 drops to cleansed skin every morning before moisturiser and sunscreen. For those experienced with vitamin C.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837598045,"sku":"P11807","price":70.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/Copy_of_20250227_-_C-Tetra_Advanced_-_PDP_-_Carousel_-_Asset_1_-_ROW.jpg?v=1777331498"},{"product_id":"medik8-daily-radiance-vitamin-c-50ml","title":"Medik8 Daily Radiance Vitamin C 50ml","description":"\u003cp\u003e\u003cstrong\u003eA vitamin C moisturiser with SPF-boosting antioxidant defence.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 Daily Radiance Vitamin C is an age-defying moisturiser infused with a potent dose of stabilised vitamin C. Designed as a morning treatment, it works synergistically with sunscreen to amplify UV protection while brightening the complexion and fighting the visible signs of ageing. The lightweight, quick-absorbing formula sits beautifully under SPF.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStabilised vitamin C for daily antioxidant defence\u003c\/li\u003e\n\u003cli\u003eAmplifies the effectiveness of sunscreen\u003c\/li\u003e\n\u003cli\u003eBrightens and evens skin tone\u003c\/li\u003e\n\u003cli\u003eFights fine lines and loss of firmness\u003c\/li\u003e\n\u003cli\u003eLightweight — layers perfectly under SPF\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply to cleansed skin every morning. Follow with sunscreen. Can be used in place of a separate vitamin C serum and moisturiser.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837663581,"sku":"P08892","price":60.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/Daily_Radiance_Vitamin_C_1.jpg?v=1777331507"},{"product_id":"medik8-pure-c15-2x15ml","title":"Medik8 Pure C15 2x15ml","description":"\u003cp\u003e\u003cstrong\u003eA pure 15% L-ascorbic acid serum for maximum potency.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedik8 Pure C15 delivers pure L-ascorbic acid — the gold standard, most clinically proven form of vitamin C — at an optimal 15% concentration. The innovative dual-bottle system keeps the formula fresh and potent throughout its use. This is the most powerful direct antioxidant in the Medik8 range, delivering transformative brightening, firming and anti-ageing results.\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e15% pure L-ascorbic acid — the most potent form\u003c\/li\u003e\n\u003cli\u003eDual-bottle system maintains freshness and efficacy\u003c\/li\u003e\n\u003cli\u003ePowerful brightening and anti-ageing results\u003c\/li\u003e\n\u003cli\u003eBoosts collagen synthesis\u003c\/li\u003e\n\u003cli\u003eMaximum free radical protection\u003c\/li\u003e\n\u003cli\u003eThe C in the CSA Philosophy®\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\u003cp\u003eApply 2-3 drops to cleansed skin every morning before moisturiser and sunscreen. Introduce gradually if new to L-ascorbic acid. Use within recommended timeframe once opened for maximum potency.\u003c\/p\u003e","brand":"Medik8","offers":[{"title":"Default Title","offer_id":63975837925725,"sku":"P09642","price":49.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/files\/Pure_C15_1.jpg?v=1777331517"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1051\/2839\/5101\/collections\/vitamin-c-skincare.png?v=1775343843","url":"https:\/\/stratumclinic.co.uk\/collections\/vitamin-c.oembed","provider":"Stratum Clinic","version":"1.0","type":"link"}