{"product_id":"cosrx-the-niacinamide-15-serum-20ml","title":"COSRX The Niacinamide 15 Serum 20ml","description":"\u003cdiv class=\"brand-quick-answer\" style=\"background:#f8f4ff;border-left:4px solid #967bb6;padding:16px 20px;margin:0 0 24px;border-radius:0 8px 8px 0\"\u003e\n\u003cp\u003e\u003cstrong\u003eCOSRX The Niacinamide 15 Serum is available in Pakistan\u003c\/strong\u003e at Korean Skincare Pakistan, shipped directly from Seoul, South Korea in 5–7 business days with Cash on Delivery across Lahore, Karachi, Islamabad, Rawalpindi, Multan, Faisalabad, and Peshawar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhat is COSRX The Niacinamide 15 Serum?\u003c\/h2\u003e\n\u003cp\u003eThe COSRX The Niacinamide 15 Serum is a high-concentration niacinamide serum formulated with 15% Niacinamide (Vitamin B3) — one of the highest concentrations available in a Korean skincare serum — to deliver maximum brightening, pore-minimising, oil-controlling, and skin barrier-strengthening benefits. Niacinamide is the number one most evidence-backed ingredient for post-inflammatory hyperpigmentation (PIH), which is the most common skin concern among Pakistani skin types, making this serum a particularly strategic choice for the South Asian skincare consumer.\u003c\/p\u003e\n\u003ch2\u003eKey Ingredients \u0026amp; Benefits\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e15% Niacinamide\u003c\/strong\u003e at this concentration acts through multiple complementary mechanisms: it inhibits the transfer of melanosomes (melanin-containing vesicles) from melanocytes to keratinocytes by 35–68% (the primary mechanism for PIH darkening), reducing the appearance of dark spots without inhibiting melanin production itself — a safer approach than tyrosinase inhibitors for reactive skin. Simultaneously, niacinamide upregulates ceramide synthesis (improving skin barrier integrity), reduces sebum secretion by up to 25% in oily skin (critical for Pakistani summer skin management), and suppresses NF-kB inflammatory pathways that drive acne inflammation.\u003c\/p\u003e\u003cp\u003eAt 15%, users occasionally experience a temporary niacin flush (mild redness and tingling for 5–10 minutes) during initial use — this is normal and resolves with regular use. \u003cstrong\u003eZinc PCA\u003c\/strong\u003e is included to reduce sebum production and provide antibacterial support against C. acnes, creating a synergistic combination with niacinamide for oily, acne-prone skin. \u003cstrong\u003ePanthenol\u003c\/strong\u003e and \u003cstrong\u003eAllantoin\u003c\/strong\u003e soothe and buffer potential mild irritation from the high niacinamide concentration.\u003c\/p\u003e\n\u003ch2\u003eSkin Concerns This Addresses\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f0f0f0\"\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;text-align:left\"\u003eSkin Concern\u003c\/th\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;text-align:left\"\u003eHow It Helps\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003ePost-acne dark spots and PIH (most common Pakistani concern)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003e15% niacinamide reduces melanosome transfer by 35-68%, the direct cause of PIH dark spots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eEnlarged pores and oily skin\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003e15% niacinamide reduces sebum by up to 25%, noticeably minimising pores and controlling shine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eUneven skin tone from UV damage\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eRegular niacinamide use evens out UV-induced discolouration by inhibiting pigment migration to surface cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHow to Use COSRX The Niacinamide 15 Serum\u003c\/h2\u003e\n\u003cp\u003eApply 2–4 drops to clean skin after toning but before moisturiser. Gently press into skin using fingertips. For beginners, start with once-daily PM application and observe for flushing. Gradually increase to twice-daily (AM + PM) over 2 weeks as skin adjusts to the 15% concentration. If flushing persists beyond 2 weeks, reduce concentration by using every other day or mixing with a hydrating toner before application. Always follow with SPF in the morning.\u003c\/p\u003e\n\u003ch2\u003eCOSRX The Niacinamide 15 Serum in Your Korean Skincare Routine\u003c\/h2\u003e\n\u003cp\u003eApply niacinamide serum after toner and before heavier serums and moisturiser in your Korean skincare routine. Note: the old concern about niacinamide and vitamin C forming niacin together is a myth — they can be safely layered. For maximum PIH brightening for Pakistani skin, use this serum AM and PM, and pair with SPF50+ AM for UV protection of the newly-brightened skin cells.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy COSRX from Korean Skincare Pakistan?\u003c\/h2\u003e\n\u003cp\u003eKorean Skincare Pakistan sources directly from COSRX's official Korean distributors and ships door-to-door from Seoul in 5–7 business days. Every product is 100% authentic with Cash on Delivery available in Lahore, Karachi, Islamabad, Rawalpindi, Multan, Faisalabad, Peshawar, and all major Pakistani cities.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs COSRX The Niacinamide 15 Serum available in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eYes — COSRX The Niacinamide 15 Serum is available in Pakistan exclusively at Korean Skincare Pakistan. We import directly from Seoul with Cash on Delivery nationwide.\u003c\/p\u003e\n\u003ch3\u003eWhat is the COSRX The Niacinamide 15 Serum price in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eCOSRX The Niacinamide 15 Serum is available at PKR 5,960 at Korean Skincare Pakistan, shipped directly from Seoul, South Korea.\u003c\/p\u003e\n\u003ch3\u003eIs 15% niacinamide too strong for Pakistani skin?\u003c\/h3\u003e\n\u003cp\u003e15% is high-concentration but effective for faster results. Some users experience temporary niacin flush (tingling and redness) for the first 1–2 weeks. If this is concerning, start with once-daily evening application and work up to twice-daily. Those with very sensitive skin may prefer starting with a 5–10% formula.\u003c\/p\u003e\n\u003ch3\u003eHow long does COSRX Niacinamide 15 Serum take to fade dark spots from acne?\u003c\/h3\u003e\n\u003cp\u003eMost users see meaningful improvement in PIH darkness within 4–6 weeks of twice-daily use. Significant clearing of post-acne dark spots typically takes 8–12 weeks. Results are faster when paired with a broad-spectrum SPF50+ to prevent UV from re-darkening treated spots.\u003c\/p\u003e\n\u003ch3\u003eCan I use COSRX Niacinamide 15 Serum with BHA, retinol, or vitamin C?\u003c\/h3\u003e\n\u003cp\u003eYes to all three. Niacinamide is one of the most compatible active ingredients and works synergistically with vitamin C, BHA, and retinol. The barrier-strengthening properties of niacinamide actually help buffer potential irritation from retinol, making it an ideal companion ingredient.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Is COSRX The Niacinamide 15 Serum available in Pakistan?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, COSRX The Niacinamide 15 Serum is available in Pakistan at Korean Skincare Pakistan, shipped from Seoul with Cash on Delivery.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the COSRX The Niacinamide 15 Serum price in Pakistan?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"COSRX The Niacinamide 15 Serum is priced at PKR 5,960 at Korean Skincare Pakistan.\"}},\n{\"@type\":\"Question\",\"name\":\"Is 15% niacinamide too strong for Pakistani skin?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"15% is high-concentration but effective for faster results. 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