{"product_id":"isntree-hyper-vitamin-c-23-serum-20ml","title":"Isntree — Hyper Vitamin C 23 Serum — 20ml","description":"\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Dull, uneven, hyperpigmented, or aging skin ready for high-dose vitamin C\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e23% vitamin C. Maximum brightness. Isntree's most powerful serum.\u003c\/strong\u003e\u003cbr\u003eIsntree's Hyper Vitamin C 23 Serum delivers a clinical-grade concentration of pure L-ascorbic acid to tackle dark spots, uneven tone, and early signs of aging — formulated at a low pH for maximum efficacy.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e23% L-ascorbic acid — one of the highest concentrations in K-beauty\u003c\/li\u003e\n\u003cli\u003eLow pH (pH 2.6–3.2) activates ascorbic acid for maximum absorption and potency\u003c\/li\u003e\n\u003cli\u003eFerulic acid stabilizes vitamin C and amplifies its antioxidant effectiveness\u003c\/li\u003e\n\u003cli\u003eResults visible in 2–4 weeks with consistent AM use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Ingredients\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eL-Ascorbic Acid (23%) —\u003c\/strong\u003e Pure vitamin C — the most researched and proven form for brightening and collagen synthesis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerulic Acid —\u003c\/strong\u003e Antioxidant that stabilizes vitamin C and doubles its UV-protective effectiveness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVitamin E (Tocopherol) —\u003c\/strong\u003e Works synergistically with vitamin C for enhanced antioxidant protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eFull Ingredients (INCI)\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWater, Ascorbic Acid (23%), Glycerin, Butylene Glycol, Ferulic Acid, Tocopherol, Sodium Hyaluronate, Allantoin, Panthenol, Carbomer, Arginine, 1,2-Hexanediol, Ethyl Hexanediol\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eUse AM only or alternate with your PM retinol routine\u003c\/li\u003e\n\u003cli\u003eAfter toning, apply 2–4 drops and press gently into skin\u003c\/li\u003e\n\u003cli\u003eFollow immediately with moisturizer and SPF — vitamin C amplifies sun sensitivity\u003c\/li\u003e\n\u003cli\u003eStore in a cool, dark place to prevent oxidation\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eFKWL Tip\u003c\/strong\u003e\u003cbr\u003eThis is a high-potency formula — start 3x\/week and build up. Pair with the Isntree Hyaluronic Acid Toner before applying for best absorption. If you're also using the Retinol Serum, do vitamin C AM and retinol PM — never together.\u003c\/p\u003e\u003cdiv style=\"border-top: 1px solid #e8e4df; margin-top: 24px; padding-top: 16px;\"\u003e\n  \u003cp style=\"font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: #9a9490; margin: 0 0 6px;\"\u003eWhy it's in our lineup\u003c\/p\u003e\n  \u003cp style=\"font-size: 0.9rem; color: #3d3935; line-height: 1.6; margin: 0;\"\u003eTranexamic acid targets hyperpigmentation at the signal level — it blocks the chemical triggers that tell your skin to overproduce melanin in the first place. We chose these serums because they address PIH more directly than most vitamin C formulas, and they do it without the irritation that can make dark spots worse.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"fkwl","offers":[{"title":"20ml","offer_id":43787577294913,"sku":"569177_3Y56ZV","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/6416\/4161\/files\/1758788722039_ef6ce8f06f48433d8b21df3a9ef6afaa_08e36eb9-05b5-466f-9cde-a7ca6752e42a.png?v=1776730595","url":"https:\/\/fkwl.us\/products\/isntree-hyper-vitamin-c-23-serum-20ml","provider":"FKWL","version":"1.0","type":"link"}