{"product_id":"cosrx-advanced-the-vitamin-c-23-serum-20g","title":"COSRX Advanced The Vitamin C 23 Serum 20g","description":"\u003ch3\u003e23% Pure Vitamin C Intensive Brightening Serum\u003c\/h3\u003e\u003cp\u003eThis is an intensive care serum formulated with 23% pure vitamin C (ascorbic acid), not a derivative. If dark spots, hyperpigmentation, or a dull complexion are your concerns, this is the product to reach for. Enhanced with super vitamin E (tocotrienol), it amplifies vitamin C's antioxidant power. The dual-phase formula includes an oil layer, so despite the high concentration, it glides on smoothly with a rich, cushiony feel. Panthenol, hyaluronic acid, and allantoin deliver hydration and soothing care in one step.\u003c\/p\u003e\u003ch3\u003eClinically Proven Improvements in Tone, Radiance, and Texture\u003c\/h3\u003e\u003cp\u003eA human application test conducted on 20 adult participants confirmed a range of skin improvements.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSkin texture improved by 92.32%\u003c\/li\u003e\n\u003cli\u003eSkin radiance improved by 34.81%\u003c\/li\u003e\n\u003cli\u003eInner melanin improved by 14.15%\u003c\/li\u003e\n\u003cli\u003eSkin luminosity improved by 15.06%\u003c\/li\u003e\n\u003cli\u003eSurface elasticity improved by 15.07%\u003c\/li\u003e\n\u003cli\u003eDark spot marks improved by 8.87%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eClinical testing also demonstrated a 5-way improvement in hyperpigmentation—including the number of dark spots, hidden spots, and spot area—along with visible benefits for eye wrinkles and pore care.\u003c\/p\u003e\u003ch3\u003eGentle Formula Safe for Sensitive Skin\u003c\/h3\u003e\u003cp\u003eFor those who've been hesitant about high-concentration vitamin C, this serum has completed low-irritation testing. It passed the primary skin irritation test, sensitive skin irritation test, and non-comedogenic test, making it suitable even for acne-prone skin. Especially recommended if you're dealing with a dull complexion, hyperpigmentation, and loss of elasticity all at once. Since pure vitamin C oxidizes easily, it's best to store the serum in the refrigerator after opening and use it within two months.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"코스알엑스 어드밴스드 더 비타민C 23 세럼 20g","offer_id":41380145070144,"sku":"5692-1","price":17.19,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/8825\/4528\/files\/1789562889174.png?v=1790148894","url":"https:\/\/piyonna.com\/products\/cosrx-advanced-the-vitamin-c-23-serum-20g","provider":"PIYONNA","version":"1.0","type":"link"}