{"product_id":"cosrx-vitamin-c-serum-brightening-essence","title":"COSRX Vitamin C Serum - C13 \u0026 C23 Brightening Essence 20ml","description":"\u003cp\u003eMeet the \u003cstrong\u003eCOSRX\u003c\/strong\u003e vitamin C serum that's become a cult favorite in Korean skincare circles. Available in two potent concentrations—C13 (13% vitamin C) and C23 (23% vitamin C)—this brightening essence lets you choose the intensity that works best for your skin. Whether you're tackling stubborn dark spots, uneven tone, or just want that lit-from-within glow, this \u003cstrong\u003eCOSRX\u003c\/strong\u003e formula delivers visible results without the irritation that often comes with high-strength vitamin C products.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/8322\/1843\/files\/South-Korea-Cosrx-Snail-C13-Essence-Retinol-C23-Hyaluronic-Acid-Essence-Brightening-20ml-eprolo-119848940.jpg?v=1771883537\" alt=\"COSRX vitamin C serum bottles showing C13 and C23 concentrations\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy Choose COSRX Vitamin C Serum\u003c\/h2\u003e\n\u003cp\u003eWhat sets this \u003cstrong\u003eCOSRX\u003c\/strong\u003e serum apart is its stable, effective formulation that actually penetrates your skin instead of oxidizing on the surface. The C13 option is perfect if you're new to vitamin C or have sensitive skin—it's gentle yet effective for daily brightening. The C23 packs a more powerful punch, ideal for those with stubborn hyperpigmentation or who've already built up tolerance to vitamin C. Both versions work to fade acne scars, reduce the appearance of sun damage, and give your complexion that enviable radiance that makes people ask about your skincare routine.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/8322\/1843\/files\/South-Korea-Cosrx-Snail-C13-Essence-Retinol-C23-Hyaluronic-Acid-Essence-Brightening-20ml-eprolo-119849085.jpg?v=1771883550\" alt=\"COSRX brightening serum texture for even skin tone\"\u003e\u003c\/p\u003e\n\u003ch2\u003eHow to Use Your COSRX Brightening Essence\u003c\/h2\u003e\n\u003cp\u003eGetting the most from your vitamin C serum is all about consistency and timing. After cleansing and toning, apply 2-3 drops of the \u003cstrong\u003eCOSRX\u003c\/strong\u003e essence to your face and neck, gently patting it in until fully absorbed. Use it in your morning routine for maximum antioxidant protection throughout the day—vitamin C shields your skin from environmental stressors and pollution. Follow with sunscreen (non-negotiable!) since vitamin C can make your skin more photosensitive. If you're starting with C23, consider using it every other day initially to let your skin adjust.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/8322\/1843\/files\/South-Korea-Cosrx-Snail-C13-Essence-Retinol-C23-Hyaluronic-Acid-Essence-Brightening-20ml-eprolo-119849182.jpg?v=1771883551\" alt=\"Woman applying COSRX vitamin C serum for brighter complexion\"\u003e\u003c\/p\u003e\n\u003ch2\u003eReal Results from COSRX Vitamin C\u003c\/h2\u003e\n\u003cp\u003eWithin 2-4 weeks of regular use, you'll start noticing your skin looking noticeably brighter and more even-toned. Dark spots begin to fade, your complexion takes on a healthy luminosity, and that dull, tired look becomes a thing of the past. The lightweight, essence-like texture of this \u003cstrong\u003eCOSRX\u003c\/strong\u003e serum absorbs quickly without any sticky residue, making it perfect for layering under moisturizer and makeup. At 20ml, it's concentrated enough to last 2-3 months with daily use, and the compact size makes it ideal for travel. This is the kind of product that earns a permanent spot in your routine.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/8322\/1843\/files\/South-Korea-Cosrx-Snail-C13-Essence-Retinol-C23-Hyaluronic-Acid-Essence-Brightening-20ml-eprolo-119849274.jpg?v=1771883551\" alt=\"COSRX Korean vitamin C serum for radiant glowing skin\"\u003e\u003c\/p\u003e","brand":"eprolo","offers":[{"title":"C23","offer_id":44073896280147,"sku":"5920357637508","price":20.0,"currency_code":"USD","in_stock":true},{"title":"C13","offer_id":44073896312915,"sku":"5920357637507","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/8322\/1843\/files\/South-Korea-Cosrx-Snail-C13-Essence-Retinol-C23-Hyaluronic-Acid-Essence-Brightening-20ml-eprolo-119848940.jpg?v=1771883537","url":"https:\/\/thelittlecornershop.online\/products\/cosrx-vitamin-c-serum-brightening-essence","provider":"The Little Corner Shop Online","version":"1.0","type":"link"}