{"product_id":"isntree-hyper-vitamin-c-23-serum-20ml","title":"Isntree Hyper Vitamin C 23 Serum 20ml – Brightening \u0026 Dark Spot Serum","description":"\u003cp\u003eDull skin, uneven tone, and dark spots that won't budge. The Isntree Hyper Vitamin C 23 Serum delivers 23% pure L-Ascorbic Acid — one of the highest concentrations available in K-beauty — in a compact 20ml format that helps keep vitamin C fresher during use cycles. Brighter, more even skin with consistent use.\u003c\/p\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eHOW IT WORKS\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe Isntree Hyper Vitamin C 23 Serum is built around \u003cstrong\u003epure L-Ascorbic Acid at 23%\u003c\/strong\u003e — the most extensively researched form of vitamin C in topical skincare. It works by inhibiting melanin production through suppression of tyrosinase activity, and by neutralising free radicals caused by UV exposure and environmental stress.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEthyl Ascorbyl Ether\u003c\/strong\u003e — a stabilised vitamin C derivative included alongside L-Ascorbic Acid for additional brightening support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePanthenol (Vitamin B5)\u003c\/strong\u003e — soothes and supports the skin barrier, helping offset potential sensitivity from high-concentration vitamin C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTocopherol (Vitamin E)\u003c\/strong\u003e — works alongside Vitamin C as a complementary antioxidant. Vitamin C helps regenerate Vitamin E after it intercepts free radicals, supporting broader antioxidant protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdenosine\u003c\/strong\u003e — supports skin firmness and smoothness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBetula Platyphylla Japonica Juice (White Birch Juice)\u003c\/strong\u003e — provides additional skin conditioning and hydration support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompact 20ml format\u003c\/strong\u003e — helps keep vitamin C fresher during use cycles. Pure L-Ascorbic Acid oxidises faster once opened. The smaller format means you finish the bottle before oxidation degrades the formula.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eGOOD FOR\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe Isntree Hyper Vitamin C 23 Serum is suited for skin experiencing:\u003c\/p\u003e\n\u003cp\u003eDullness and lack of radiance · Dark spots and post-acne marks · Uneven skin tone · Sun damage and early hyperpigmentation · Skin that needs antioxidant protection\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSkin types:\u003c\/strong\u003e Normal, oily, and combination skin. Not recommended for sensitive or reactive skin — pure L-Ascorbic Acid at 23% is a high-strength active that may cause irritation on compromised or sensitive skin.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Always follow with SPF in the morning. Vitamin C increases skin sensitivity to UV exposure. Introduce gradually — start every second day and build to daily use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eHOW TO USE\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003eWhen:\u003c\/strong\u003e Morning skincare routine, after cleansing and before moisturiser and SPF.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow:\u003c\/strong\u003e Apply 2–3 drops of the Isntree Hyper Vitamin C 23 Serum onto clean skin. Gently press and pat into face and neck until absorbed. Do not rub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency:\u003c\/strong\u003e Start every second day for the first 2 weeks. Build to daily use once skin has adjusted.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Store in a cool, dry place away from direct sunlight. Refrigeration extends shelf life once opened.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePro tip:\u003c\/strong\u003e Pair with a broad-spectrum SPF 50+ every morning — vitamin C fades existing pigmentation, SPF prevents new damage from forming. Together they are significantly more effective than either product alone.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eFULL INGREDIENTS\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWater, Ascorbic Acid (23%), Propanediol, Betaine, 1,2-Hexanediol, Polyglycerin-3, Tromethamine, Ethyl Ascorbyl Ether, Hydroxyethyl Urea, Betula Platyphylla Japonica Juice, Ethylhexylglycerin, Adenosine, Disodium EDTA, Panthenol, Gardenia Florida Fruit Extract, Dextrin, Tocopherol\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAlways check the physical packaging upon receipt as formulations may be updated by the manufacturer.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eFREQUENTLY ASKED QUESTIONS\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is 23% vitamin C considered high and is it safe to use?\u003c\/strong\u003e\u003cbr\u003eThe Isntree Hyper Vitamin C 23 Serum uses pure L-Ascorbic Acid — the most extensively researched form of vitamin C in skincare. At 23%, it is a high-strength active. Most vitamin C serums sit between 10–20%. This concentration can deliver visible brightening results but requires proper introduction. Start by using the Isntree Hyper Vitamin C 23 Serum every second day for the first two weeks, then build to daily use as your skin adjusts. If you have sensitive or reactive skin, a lower-concentration formula may be more suitable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Isntree Hyper Vitamin C 23 Serum come in a 20ml bottle?\u003c\/strong\u003e\u003cbr\u003ePure L-Ascorbic Acid begins to oxidise once a bottle is opened and exposed to air and light. A larger bottle means more product exposed to oxygen over a longer period before you finish it. The compact 20ml format helps keep the Isntree Hyper Vitamin C 23 Serum fresher and more potent throughout your use cycle — so you get the full benefit of the 23% concentration from first use to last drop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the Isntree Hyper Vitamin C 23 Serum alongside other actives?\u003c\/strong\u003e\u003cbr\u003eThe Isntree Hyper Vitamin C 23 Serum is best applied to clean skin before other serums and moisturiser. Always follow with a broad-spectrum SPF 50+ in the morning when using high-strength vitamin C. It pairs well with a hydrating toner or essence applied after, and with a gentle moisturiser to support the skin barrier.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWe're here to educate, not to diagnose. This product is a cosmetic and is not intended to treat, cure or prevent any condition.\u003c\/em\u003e\u003c\/p\u003e","brand":"Isntree","offers":[{"title":"20ml","offer_id":48670134239487,"sku":"607043_OWU5NC","price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/3463\/2703\/files\/1758788722039_ef6ce8f06f48433d8b21df3a9ef6afaa_3c1cd586-a6e8-4788-b0c5-4dbf3d458713.png?v=1781334025","url":"https:\/\/haniskin.com\/products\/isntree-hyper-vitamin-c-23-serum-20ml","provider":"Hani Skin","version":"1.0","type":"link"}