{"product_id":"cosrx-the-niacinamide-15-serum","title":"COSRX The Niacinamide 15 Serum","description":"\u003cp\u003e\u003cstrong\u003eCOSRX The Niacinamide 15 Serum\u003c\/strong\u003e is a high-strength serum with 15% niacinamide designed to help control excess sebum, refine the appearance of enlarged pores and improve uneven skin tone and post-blemish marks.\u003c\/p\u003e\n\n\u003cp\u003eThe lightweight, non-sticky formula combines \u003cstrong\u003e15% niacinamide\u003c\/strong\u003e with N-acetylglucosamine (NAG), Zinc PCA, trehalose, pullulan and allantoin. It absorbs easily and helps support smoother, clearer and more balanced-looking skin without a heavy finish. COSRX especially recommends it for oily, combination and blemish-prone skin, while also listing it as suitable for sensitive skin. \u003c\/p\u003e\n\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHelps reduce excess sebum and oily shine.\u003c\/li\u003e\n\u003cli\u003eHelps refine the appearance of enlarged pores.\u003c\/li\u003e\n\u003cli\u003eHelps improve uneven skin tone and post-blemish marks.\u003c\/li\u003e\n\u003cli\u003eHelps smooth rough skin texture.\u003c\/li\u003e\n\u003cli\u003eLightweight, non-sticky texture.\u003c\/li\u003e\n\u003cli\u003eNon-comedogenic and dermatologist tested.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho is it for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOily skin.\u003c\/li\u003e\n\u003cli\u003eCombination skin.\u003c\/li\u003e\n\u003cli\u003eBlemish-prone skin.\u003c\/li\u003e\n\u003cli\u003eSkin with enlarged pores.\u003c\/li\u003e\n\u003cli\u003eSkin with uneven texture or post-blemish marks.\u003c\/li\u003e\n\u003cli\u003eSensitive skin according to individual tolerance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMain ingredients\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNiacinamide 15%\u003c\/strong\u003e – helps regulate excess sebum, refine pores and improve uneven-looking tone.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eN-Acetylglucosamine (NAG)\u003c\/strong\u003e – helps support smoother texture and brighter-looking skin.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eZinc PCA\u003c\/strong\u003e – helps support balanced sebum care.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTrehalose\u003c\/strong\u003e – helps maintain hydration and skin comfort.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePullulan\u003c\/strong\u003e – provides moisturizing and skin-conditioning care.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAllantoin\u003c\/strong\u003e – helps soothe and soften the skin.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTocopherol\u003c\/strong\u003e – provides antioxidant skin-conditioning care.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eAfter cleansing and toning, apply a few drops of \u003cstrong\u003eCOSRX The Niacinamide 15 Serum\u003c\/strong\u003e to problem areas or evenly over the entire face. Gently pat until absorbed, then follow with moisturizer. Use sunscreen during the daytime. A patch test is recommended before facial use. \u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow much niacinamide does COSRX The Niacinamide 15 Serum contain?\u003c\/strong\u003e\u003cbr\u003eThe formula contains 15% niacinamide. \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan COSRX The Niacinamide 15 Serum be used with vitamin C or retinol?\u003c\/strong\u003e\u003cbr\u003eCOSRX recommends not using high-strength vitamin C, retinol or AHA\/BHA products at the same time as this serum. Use them at different times of the day or on different routines to reduce the risk of irritation. \u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs COSRX The Niacinamide 15 Serum suitable for oily and blemish-prone skin?\u003c\/strong\u003e\u003cbr\u003eYes. COSRX specifically recommends it for oily, combination and blemish-prone skin and has completed non-comedogenic testing. \u003c\/p\u003e\n\n\u003ch3\u003eWarnings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor external use only.\u003c\/li\u003e\n\u003cli\u003ePatch test before first facial use.\u003c\/li\u003e\n\u003cli\u003eUse sunscreen during the daytime.\u003c\/li\u003e\n\u003cli\u003eHigh concentrations of niacinamide may cause redness, itching or irritation in some users.\u003c\/li\u003e\n\u003cli\u003eAvoid using at the same time as high-strength vitamin C, retinol or strong AHA\/BHA products if this causes irritation.\u003c\/li\u003e\n\u003cli\u003eDiscontinue use if persistent irritation occurs.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Cosrx","offers":[{"title":"20 ml.","offer_id":47807684051291,"sku":"YK2190","price":17.8,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/1245\/6855\/files\/COSRX_The_Niacinamide_15_Serum.webp?v=1728257141","url":"https:\/\/yokoskincare.fi\/en\/products\/cosrx-the-niacinamide-15-serum","provider":"Yoko","version":"1.0","type":"link"}