{"product_id":"cosrx-pure-vitamin-c-13-serum-0-67-oz-renewal-brightening-serum-with-hyaluronic-acid-vitamin-e","title":"COSRX Pure Vitamin C 13% Serum — 0.67 oz Renewal Brightening Serum with Hyaluronic Acid \u0026 Vitamin E","description":"\u003cstrong\u003eCOSRX Pure Vitamin C 13% Serum is a lightweight daily antioxidant serum that blends pure ascorbic acid with Vitamin E, hyaluronic acid and glutathione to brighten uneven tone and hydrate skin.\u003c\/strong\u003e\n\n\u003cp\u003eThis concentrated 0.67 oz (20 mL) renewal serum is formulated for everyday use: a stabilized 13% vitamin C (ascorbic acid) base supported by tocotrienol (Super Vitamin E), low‑molecular hyaluronic acid and glutathione. The result is a fast‑absorbing liquid designed to deliver antioxidant support, visible radiance and smoother texture without a sticky finish. The bottle is compact for travel and refrigeration is recommended after opening to slow oxidation.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this serum fit into my morning and evening routine?\u003c\/h3\u003e\n\u003cp\u003eApply 2–3 drops after cleansing and toning, before thicker creams and sunscreen. In the morning, always layer SPF 30+ on top; in the evening, follow with moisturizer to lock in hydration. Start with once daily and increase to twice if your skin tolerates it well.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShake 1–2 times before dispensing to ensure even delivery.\u003c\/li\u003e\n  \u003cli\u003eUse 2–3 drops; pat gently into face and neck, avoiding direct eye contact.\u003c\/li\u003e\n  \u003cli\u003eIf used in daytime, apply broad‑spectrum SPF 30+ as the final step.\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 skin concerns can it help with and how quickly will I notice changes?\u003c\/h3\u003e\n\u003cp\u003eThe formula targets dullness, uneven tone and dehydration by combining vitamin C's brightening potential with hyaluronic acid's moisture and antioxidant support from Vitamin E and glutathione. Visible improvements in radiance and skin texture can appear within weeks, though results vary by individual and consistent use is key.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e13% pure ascorbic acid for antioxidant brightening.\u003c\/li\u003e\n  \u003cli\u003eHyaluronic acid for immediate and lasting hydration.\u003c\/li\u003e\n  \u003cli\u003eTocotrienol (Super Vitamin E) and glutathione help support antioxidant performance.\u003c\/li\u003e\n  \u003cli\u003eLight, fast‑absorbing texture suitable under makeup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this product suitable for sensitive or acne‑prone skin?\u003c\/h3\u003e\n\u003cp\u003eWhile many users with normal to combination skin tolerate the serum well, pure vitamin C can cause irritation for highly sensitive skin or those new to active acids. Always perform a patch test and introduce slowly; discontinue use if persistent redness or irritation develops and consult a dermatologist if needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatch test on the body for 24 hours before full facial use.\u003c\/li\u003e\n  \u003cli\u003eBegin with once‑daily application and monitor skin response.\u003c\/li\u003e\n  \u003cli\u003eAvoid direct contact with eyes and apply sparingly around delicate areas.\u003c\/li\u003e\n  \u003cli\u003eStop use and seek advice if irritation or allergic reaction occurs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I store and handle the serum to keep it effective?\u003c\/h3\u003e\n\u003cp\u003eAscorbic acid is sensitive to light, heat and air, so proper storage preserves potency. Keep the bottle capped, store in a cool place, and refrigerate after opening to reduce oxidation and extend shelf life. If the formula darkens significantly or smells off, discard it.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShake before use to mix contents evenly.\u003c\/li\u003e\n  \u003cli\u003eClose the cap tightly after each use to limit air exposure.\u003c\/li\u003e\n  \u003cli\u003eRefrigerate after opening and keep out of direct sunlight.\u003c\/li\u003e\n  \u003cli\u003eDiscard if color or scent changes markedly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: COSRX Pure Vitamin C 13% Serum suits someone seeking a compact, effective antioxidant boost for dull or uneven skin tone who is comfortable introducing active ingredients into their routine. It fits users looking for a fast‑absorbing, non‑sticky serum that layers well under sunscreen and moisturizer, and who will follow recommended patch testing and storage guidance.\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—start with once daily and increase to twice if tolerated. Always follow with SPF 30+ during daytime use.\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 after opening?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Keep the cap tight, store in a cool dark place and refrigerate after opening to slow vitamin C oxidation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":53437006610779,"sku":"B0FWQKKT1K","price":31.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/9860\/9243\/files\/cosrx-pure-vitamin-c-13ml-front-bottle.jpg?v=1782339720","url":"https:\/\/remediesbeauty.co.uk\/products\/cosrx-pure-vitamin-c-13-serum-0-67-oz-renewal-brightening-serum-with-hyaluronic-acid-vitamin-e","provider":"REMEDIESBEAUTY","version":"1.0","type":"link"}