{"product_id":"cosrx-pure-vitamin-c-13-serum-0-67-oz-brightening-facial-serum-with-hyaluronic-acid-vitamin-e","title":"COSRX Pure Vitamin C 13% Serum — 0.67 oz Brightening Facial Serum with Hyaluronic Acid \u0026 Vitamin E","description":"\u003cp\u003e\u003cstrong\u003eCOSRX Pure Vitamin C 13% Serum is a concentrated daily vitamin C treatment with hyaluronic acid, vitamin E variants, and glutathione to hydrate skin and help even skin tone.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis lightweight Korean serum combines 13% ascorbic acid with supportive antioxidants and humectants to target dullness and uneven pigmentation while delivering hydration. The formula is designed to absorb quickly without a sticky finish and can be worn under sunscreen during daytime routines. Packaged in a 0.67 oz bottle, it’s intended for targeted brightening and moisture support when used consistently and stored properly to limit oxidation.\u003c\/p\u003e\n\n\u003ch3\u003eHow should I apply this serum in my daily skincare routine?\u003c\/h3\u003e\n\u003cp\u003eShake the bottle once or twice before dispensing to mix active ingredients. Use 2–3 drops on cleansed skin once or twice daily, allowing it to absorb before following with moisturizer and, in the morning, a broad-spectrum SPF 30 or higher.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply to clean, dry skin; avoid direct contact with eyes.\u003c\/li\u003e\n  \u003cli\u003eLayer moisturizer after serum to seal in hydration.\u003c\/li\u003e\n  \u003cli\u003eUse sunscreen when worn during the day to protect results.\u003c\/li\u003e\n  \u003cli\u003eStore in the refrigerator after opening to slow oxidation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat key ingredients are in the formula and what do they do?\u003c\/h3\u003e\n\u003cp\u003eThe serum centers on 13% pure vitamin C (ascorbic acid) supported by Super Vitamin E (tocotrienol), hyaluronic acid, and glutathione. These ingredients work together to provide antioxidant protection, boost hydration, and help improve the look of uneven tone over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePure Vitamin C (ascorbic acid) — potent antioxidant for brightness.\u003c\/li\u003e\n  \u003cli\u003eSuper Vitamin E (tocotrienol) — supports antioxidant activity.\u003c\/li\u003e\n  \u003cli\u003eHyaluronic acid — draws and holds moisture for smoother texture.\u003c\/li\u003e\n  \u003cli\u003eGlutathione — complements brightening and reduces dullness appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this serum suitable for sensitive or acne-prone skin types?\u003c\/h3\u003e\n\u003cp\u003eThe formulation is effective but contains active vitamin C at a relatively high concentration, which can irritate sensitive skin. Patch testing before facial use is recommended and starting with once-daily application helps assess tolerance; consult a dermatologist if you have concerns or reactions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePerform a 24-hour patch test on the body before facial use.\u003c\/li\u003e\n  \u003cli\u003eBegin with once-daily application to build tolerance.\u003c\/li\u003e\n  \u003cli\u003eIf irritation occurs, discontinue and seek medical advice.\u003c\/li\u003e\n  \u003cli\u003eAvoid direct eye area contact; can be applied around but not in eyes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I keep the serum stable and extend its shelf life?\u003c\/h3\u003e\n\u003cp\u003eAscorbic acid can oxidize when exposed to heat, light, or air; proper storage preserves potency. Keep the bottle tightly closed, store in a cool place, and refrigerate after opening to slow degradation and maintain color and effectiveness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShake before use to redistribute ingredients.\u003c\/li\u003e\n  \u003cli\u003eTightly cap the bottle after each use to reduce air exposure.\u003c\/li\u003e\n  \u003cli\u003eRefrigerate the serum after opening to help prevent oxidation.\u003c\/li\u003e\n  \u003cli\u003eDiscard if the product changes scent, color, or texture significantly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this formula best for? This COSRX serum is aimed at people looking to brighten dull skin, reduce the appearance of uneven pigmentation, and add lightweight hydration. It suits those comfortable introducing a potent vitamin C product into their routine, willing to patch test and use daily sunscreen for daytime wear. If you have very reactive skin or prefer milder actives, consider starting with lower concentrations or consult a skincare professional before use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use COSRX Pure Vitamin C 13% Serum every day?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes; apply 2–3 drops once or twice daily after cleansing. Start with once a day if you have sensitive skin and always follow with SPF in the morning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I store the serum to preserve potency?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Tightly close the cap and refrigerate after opening to reduce oxidation and extend the product’s effective life.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":49630352703626,"sku":"B0FWQKKT1K","price":82.72,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/4825\/6394\/files\/cosrx-serum-front-bottle.jpg?v=1782933552","url":"https:\/\/auviraskincare.com\/products\/cosrx-pure-vitamin-c-13-serum-0-67-oz-brightening-facial-serum-with-hyaluronic-acid-vitamin-e","provider":"Auvira Beauty","version":"1.0","type":"link"}