{"product_id":"cosrx-the-niacinamide-15-serum-20ml","title":"COSRX The Niacinamide 15 Serum 20ml","description":"\u003cp class=\"ksa-answer-first\"\u003eCOSRX The Niacinamide 15 Serum is a 20ml high-strength serum with 15% niacinamide and zinc PCA that refines the appearance of pores, regulates excess sebum and helps reduce the look of post-acne marks, for a clearer, smoother, more even complexion. N-acetylglucosamine gently helps fade dark spots. It is non-comedogenic tested and ideal for oily, combination and blemish-prone skin. Genuine COSRX, shipped from Seoul with Cash on Delivery.\u003c\/p\u003e\n\n\u003ctable class=\"ksa-key-facts\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCOSRX (Korea)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e20ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003ctd\u003eOily, combination and blemish-prone skin; enlarged pores\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKey ingredients\u003c\/th\u003e\n\u003ctd\u003e15% niacinamide, zinc PCA, N-acetylglucosamine, trehalose, allantoin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTesting\u003c\/th\u003e\n\u003ctd\u003eNon-comedogenic tested\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoutine step\u003c\/th\u003e\n\u003ctd\u003eSerum, AM and PM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cblockquote\u003e\n\u003cp\u003e“COSRX’s The Niacinamide 15 Serum is formulated with 15% niacinamide, paired with zinc PCA to deeply refine the appearance of pores, regulate excess sebum, and help reduce the look of post-acne marks.”\u003c\/p\u003e\n\u003cfooter\u003e— COSRX, \u003ca href=\"https:\/\/cosrx.com\/products\/the-niacinamide-15-serum-%EB%B2%88%EB%93%A4\"\u003eofficial product description\u003c\/a\u003e\u003c\/footer\u003e\n\u003c\/blockquote\u003e\n\n\u003ch2\u003eWhat does COSRX Niacinamide 15 Serum do?\u003c\/h2\u003e\n\u003cp\u003eIt is COSRX's \"total breakout care and oil control\" serum. High-strength niacinamide works on pores, oil and marks; zinc PCA balances oil and water; N-acetylglucosamine gently exfoliates to help fade discolouration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15% niacinamide\u003c\/strong\u003e – refines pores, controls sebum, evens tone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZinc PCA\u003c\/strong\u003e – balances oil and supports skin recovery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eN-acetylglucosamine\u003c\/strong\u003e – helps fade hyperpigmentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-comedogenic tested\u003c\/strong\u003e – won't clog pores.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIs it the best niacinamide serum for oily skin in the UAE?\u003c\/h2\u003e\n\u003cp\u003eIt is one of the strongest options for oily, congested skin in humid heat: 15% niacinamide plus zinc targets shine, visible pores and post-breakout marks together. If you are new to niacinamide, start once a day.\u003c\/p\u003e\n\n\u003ch2\u003eHow to use COSRX The Niacinamide 15 Serum\u003c\/h2\u003e\n\u003ch3\u003eApply\u003c\/h3\u003e\n\u003cp\u003eAfter cleansing, in the serum step, apply a few drops and massage gently from the centre of the face outwards until absorbed.\u003c\/p\u003e\n\u003ch4\u003eMorning\u003c\/h4\u003e\n\u003cp\u003eFollow with moisturiser and sunscreen.\u003c\/p\u003e\n\u003ch4\u003eEvening\u003c\/h4\u003e\n\u003cp\u003eUse before the \u003ca href=\"\/products\/cosrx-advanced-snail-92-all-in-one-cream-100g\"\u003eCOSRX Snail 92 Cream\u003c\/a\u003e, and on some nights alternate with the \u003ca href=\"\/products\/cosrx-bha-blackhead-power-liquid-100ml\"\u003eCOSRX BHA Blackhead Power Liquid\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eCOSRX Niacinamide 15 vs Jumiso Niacinamide 20 Serum\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eCOSRX The Niacinamide 15 Serum\u003c\/th\u003e\n\u003cth\u003eJumiso Niacinamide 20 Serum\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNiacinamide\u003c\/td\u003e\n\u003ctd\u003e15% + zinc PCA\u003c\/td\u003e\n\u003ctd\u003e20% + TXA + glutathione\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocus\u003c\/td\u003e\n\u003ctd\u003eBreakouts and oil\u003c\/td\u003e\n\u003ctd\u003ePigmentation and pores\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eShop \u003ca href=\"\/collections\/best-korean-skincare-acne-blemishes-uae\"\u003eKorean skincare for acne\u003c\/a\u003e, \u003ca href=\"\/collections\/korean-serums-ampoules-uae\"\u003eserums\u003c\/a\u003e and the full \u003ca href=\"\/collections\/cosrx-skincare-uae\"\u003eCOSRX range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eGenuine COSRX from Seoul: how we source and ship\u003c\/h2\u003e\n\u003cdiv class=\"ksa-trust\"\u003e\n\u003cp\u003eKorean Skincare Arabia is an authentic seller of COSRX products in the UAE and GCC. We source all stock directly from official brand channels in South Korea, verify that every delivery is a fresh batch, receive it into our Seoul warehouse and ship each parcel directly from Korea by air, with delivery in 5–7 days across the UAE and GCC — so you always get fresh K-beauty with batch codes you can verify.\u003c\/p\u003e\n\u003cp\u003eEvery order ships via DHL Express with customs handled, delivered to your door, with Cash on Delivery available. Verify your product with our \u003ca href=\"\/blogs\/news\/cosrx-batch-code-expiry-checker-uae-guide\"\u003eCOSRX batch code guide\u003c\/a\u003e. Our group is rated 4.7 on Trustpilot from 18,000+ reviews.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ksa-summary\"\u003e\n\u003cp\u003e\u003cstrong\u003eIn short\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15% niacinamide + zinc PCA for pores, oil and marks.\u003c\/li\u003e\n\u003cli\u003eNon-comedogenic tested; for oily and blemish-prone skin.\u003c\/li\u003e\n\u003cli\u003eA few drops after cleansing, AM and PM.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCOSRX Niacinamide 15 Serum FAQs\u003c\/h2\u003e\n\u003ch3\u003eWhere can I buy authentic COSRX The Niacinamide 15 Serum in the UAE and GCC?\u003c\/h3\u003e\n\u003cp\u003eYou can buy authentic COSRX The Niacinamide 15 Serum from Korean Skincare Arabia. We source stock directly from official brand channels in South Korea, check that every batch is fresh, and ship each parcel by air from our Seoul warehouse, arriving in 5–7 days across the UAE and GCC with Cash on Delivery. You can verify the batch code on your pack with our \u003ca href=\"\/blogs\/news\/cosrx-batch-code-expiry-checker-uae-guide\"\u003eCOSRX batch code guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs 15% niacinamide too strong?\u003c\/h3\u003e\n\u003cp\u003eIt is a high concentration, which is why it works well on oily, congested skin. If you are new to niacinamide or have sensitive skin, start once a day in the evening and increase to twice daily if your skin is comfortable. Mild tingling at first usually settles.\u003c\/p\u003e\n\u003ch3\u003eDoes COSRX Niacinamide 15 help acne marks?\u003c\/h3\u003e\n\u003cp\u003eYes, it is designed to help reduce the look of post-acne marks. Niacinamide evens tone and N-acetylglucosamine gently helps fade discolouration, while zinc PCA calms oiliness. Results build over several weeks, and daily sunscreen helps prevent marks from darkening again.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with vitamin C?\u003c\/h3\u003e\n\u003cp\u003eYes. Niacinamide and vitamin C can be used in the same routine. Many people use vitamin C in the morning and niacinamide in the evening to keep things simple. Introduce one new active at a time and patch test first.\u003c\/p\u003e\n\u003ch3\u003eWill it clog pores?\u003c\/h3\u003e\n\u003cp\u003eNo. COSRX states it is non-comedogenic tested, so it is designed not to clog pores. That makes it suitable for oily, combination and blemish-prone skin, including in hot, humid weather when congestion is more common. Apply a few drops after cleansing, morning and evening, then moisturise.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with BHA?\u003c\/h3\u003e\n\u003cp\u003eYes. Niacinamide pairs well with BHA. Use BHA a few evenings a week and the serum daily, or apply BHA first and the serum afterwards. If your skin feels irritated, use them on alternate nights and add a soothing moisturiser.\u003c\/p\u003e\n\u003cp class=\"ksa-reviewed\"\u003e\u003cem\u003eReviewed by the Korean Skincare Arabia team, Seoul · Updated October 2026\u003c\/em\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Where can I buy authentic COSRX The Niacinamide 15 Serum in the UAE and GCC?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"You can buy authentic COSRX The Niacinamide 15 Serum from Korean Skincare Arabia. We source stock directly from official brand channels in South Korea, check that every batch is fresh, and ship each parcel by air from our Seoul warehouse, arriving in 5–7 days across the UAE and GCC with Cash on Delivery. You can verify the batch code on your pack with our COSRX batch code guide .\"}}, {\"@type\": \"Question\", \"name\": \"Is 15% niacinamide too strong?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is a high concentration, which is why it works well on oily, congested skin. If you are new to niacinamide or have sensitive skin, start once a day in the evening and increase to twice daily if your skin is comfortable. Mild tingling at first usually settles.\"}}, {\"@type\": \"Question\", \"name\": \"Does COSRX Niacinamide 15 help acne marks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, it is designed to help reduce the look of post-acne marks. Niacinamide evens tone and N-acetylglucosamine gently helps fade discolouration, while zinc PCA calms oiliness. Results build over several weeks, and daily sunscreen helps prevent marks from darkening again.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use it with vitamin C?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Niacinamide and vitamin C can be used in the same routine. Many people use vitamin C in the morning and niacinamide in the evening to keep things simple. Introduce one new active at a time and patch test first.\"}}, {\"@type\": \"Question\", \"name\": \"Will it clog pores?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. COSRX states it is non-comedogenic tested, so it is designed not to clog pores. That makes it suitable for oily, combination and blemish-prone skin, including in hot, humid weather when congestion is more common. Apply a few drops after cleansing, morning and evening, then moisturise.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use it with BHA?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Niacinamide pairs well with BHA. Use BHA a few evenings a week and the serum daily, or apply BHA first and the serum afterwards. If your skin feels irritated, use them on alternate nights and add a soothing moisturiser.\"}}]}\u003c\/script\u003e","brand":"COSRX","offers":[{"title":"20ml","offer_id":57397234630988,"sku":"CPY-8809598454637","price":98.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3843\/2844\/files\/COSRX_The_Niacinamide_15_Serum__20ml_-removebg-preview.webp?v=1777323728","url":"https:\/\/koreanskincarearabia.com\/products\/cosrx-the-niacinamide-15-serum-20ml","provider":"Korean Skincare Arabia","version":"1.0","type":"link"}