{"product_id":"tirtir-niacinamide-20-serum-30ml","title":"TIRTIR Niacinamide 20% Serum | Brightening + Pore Serum (30ml)","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eTIRTIR Niacinamide 20% Serum 30ml | MIMOMART\u003c\/title\u003e\n\u003cmeta name=\"description\" content=\"TIRTIR Niacinamide 20% Serum — 4x stronger than standard serums. Alpha-Arbutin 2%, Retinol, Glutathione, Triple Hyaluronic Acid, Zinc PCA. Fragrance-free. 30ml. Authentic K-beauty at MIMOMART.\"\u003e\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:ital,wght@0,400;0,600;1,400\u0026amp;family=DM+Sans:wght@300;400;500;600;700\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  body { font-family: 'DM Sans', sans-serif; background: #f7f8f5; color: #1a1a1a; font-size: 16px; line-height: 1.7; }\n  .preview-shell { max-width: 840px; margin: 0 auto; padding: 2rem 1.5rem 5rem; }\n\n  \/* ─────────────────────────────────────────\n     SHOPIFY COPY: paste \u003cdiv class=\"tt-wrap\"\u003e\n     through its closing \u003c\/div\u003e into the HTML\n     description editor of your product page.\n  ───────────────────────────────────────── *\/\n\n  .tt-wrap { font-family: 'DM Sans', sans-serif; color: #1a1a1a; }\n\n  \/* ── Hero ── *\/\n  .tt-hero {\n    background: linear-gradient(135deg, #0f2b1e 0%, #1a4a32 100%);\n    border-radius: 8px;\n    padding: 1.6rem 1.5rem;\n    margin-bottom: 1.75rem;\n    color: #fff;\n  }\n  .tt-hero .eyebrow {\n    font-size: 10.5px; 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color: #4a5e52; line-height: 1.6; }\n\n  \/* ── For who ── *\/\n  .tt-forwho { margin-bottom: 2rem; }\n  .tt-forwho ul {\n    list-style: none; display: grid;\n    grid-template-columns: 1fr 1fr; gap: 8px 14px;\n  }\n  .tt-forwho li {\n    font-size: 0.875rem; color: #333;\n    padding-left: 1.25rem; position: relative; line-height: 1.5;\n  }\n  .tt-forwho li::before {\n    content: \"✓\"; position: absolute; left: 0;\n    color: #1a5c3a; font-weight: 700;\n  }\n\n  \/* ── Timeline ── *\/\n  .tt-timeline { margin-bottom: 2rem; }\n  .tt-week {\n    display: flex; gap: 14px; margin-bottom: 1rem; align-items: flex-start;\n  }\n  .tt-week .wk {\n    flex-shrink: 0; min-width: 64px; background: #0f2b1e; color: #a8d5b5;\n    font-size: 11px; font-weight: 700; text-align: center; padding: 5px 8px;\n    border-radius: 5px; line-height: 1.3;\n  }\n  .tt-week .wkd { font-size: 0.865rem; color: #333; line-height: 1.6; }\n  .tt-week .wkd strong { display: block; font-size: 0.875rem; color: #0f2b1e; font-weight: 700; }\n\n  \/* ── How to use ── *\/\n  .tt-howto { margin-bottom: 2rem; }\n  .tt-step { display: flex; gap: 13px; margin-bottom: 1rem; align-items: flex-start; }\n  .tt-step .n {\n    flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%;\n    background: #1a5c3a; color: #fff; font-size: 13px; font-weight: 700;\n    display: flex; align-items: center; justify-content: center; margin-top: 2px;\n  }\n  .tt-step .t { font-size: 0.875rem; color: #333; line-height: 1.65; }\n  .tt-step .t strong { display: block; font-weight: 700; color: #0f2b1e; margin-bottom: 1px; }\n\n  \/* ── Layer guide ── *\/\n  .tt-layer {\n    background: #f2f9f5; border: 1px solid #b0d9c0;\n    border-radius: 8px; padding: 1.1rem 1.2rem; margin-bottom: 2rem;\n  }\n  .tt-layer .l-title { font-size: 0.9rem; font-weight: 700; color: #0f2b1e; margin-bottom: 0.65rem; }\n  .tt-layer-row {\n    display: flex; gap: 8px; align-items: flex-start;\n    padding: 5px 0; border-bottom: 1px solid #d5eadc; font-size: 0.84rem;\n  }\n  .tt-layer-row:last-child { border-bottom: none; }\n  .tt-layer-row .lr-step {\n    flex-shrink: 0; font-size: 10px; font-weight: 700;\n    color: #fff; background: #1a5c3a; border-radius: 3px;\n    padding: 2px 6px; margin-top: 2px;\n  }\n  .tt-layer-row .lr-txt { color: #2a4a35; line-height: 1.5; }\n  .tt-layer-row .lr-txt strong { color: #0f2b1e; }\n\n  \/* ── Pro tips ── *\/\n  .tt-tips {\n    background: #fff; border: 1px solid #b0d9c0;\n    border-radius: 8px; padding: 1.15rem 1.25rem; margin-bottom: 2rem;\n  }\n  .tt-tips .tp-title { font-size: 0.9rem; font-weight: 700; color: #0f2b1e; margin-bottom: 0.65rem; }\n  .tt-tips ul { list-style: none; }\n  .tt-tips li {\n    font-size: 0.845rem; color: #2a4a35;\n    padding: 4px 0 4px 1.1rem; position: relative; line-height: 1.55;\n  }\n  .tt-tips li::before {\n    content: \"·\"; position: absolute; left: 0;\n    color: #1a5c3a; font-weight: 900; font-size: 1.2rem; top: -2px;\n  }\n\n  \/* ── Full INCI ── *\/\n  .tt-inci {\n    background: #f4f6f4; border: 1px solid #d0ddd3;\n    border-radius: 8px; padding: 1rem 1.1rem; margin-bottom: 2rem;\n  }\n  .tt-inci .i-title {\n    font-size: 10.5px; font-weight: 700; letter-spacing: 0.1em;\n    text-transform: uppercase; color: #7a9a82; margin-bottom: 0.45rem;\n  }\n  .tt-inci p { font-size: 0.77rem; color: #7a9a82; line-height: 1.7; }\n\n  \/* ── Specs table ── *\/\n  .tt-specs { width: 100%; border-collapse: collapse; font-size: 0.875rem; margin-bottom: 2rem; }\n  .tt-specs td { padding: 10px 0; border-bottom: 1px solid #eef5f1; vertical-align: top; }\n  .tt-specs td:first-child { color: #7a9a82; width: 42%; }\n  .tt-specs td:last-child { font-weight: 500; }\n\n  \/* ── Auth ── *\/\n  .tt-auth { border-top: 2px solid #0f2b1e; margin-top: 2.5rem; padding-top: 1.25rem; }\n  .tt-auth-inner {\n    background: #0f2b1e; color: #fff; border-radius: 7px;\n    padding: 1.1rem 1.25rem; display: flex; gap: 12px; align-items: flex-start;\n  }\n  .tt-auth-icon { font-size: 20px; flex-shrink: 0; margin-top: 1px; }\n  .tt-auth-text { font-size: 0.82rem; line-height: 1.65; color: #a8d5b5; }\n  .tt-auth-text strong {\n    display: block; font-size: 0.84rem; color: #fff; font-weight: 700;\n    margin-bottom: 3px; letter-spacing: 0.04em; text-transform: uppercase;\n  }\n\n  @media (max-width: 600px) {\n    .tt-why-grid { grid-template-columns: 1fr 1fr; }\n    .tt-forwho ul { grid-template-columns: 1fr; }\n    .tt-hero .headline { font-size: 1.3rem; }\n  }\n  @media (max-width: 420px) {\n    .tt-why-grid { grid-template-columns: 1fr; }\n  }\n\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"tt-wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv class=\"tt-hero\"\u003e\n    \u003cdiv class=\"eyebrow\"\u003eTIRTIR · Trust In Radiance · Founded Seoul, 2016\u003c\/div\u003e\n    \u003cdiv class=\"headline\"\u003eYou've Tried 5% Niacinamide.\u003cbr\u003e\u003cem\u003eThis Is 20%.\u003c\/em\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"subline\"\u003eA high-dose brightening serum with 4× the niacinamide of standard formulas — stacked with Alpha-Arbutin 2%, Retinol, Glutathione, Triple Hyaluronic Acid, and Zinc PCA. One serum. Five actives. Zero fragrance.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- BADGES --\u003e\n  \u003cdiv class=\"tt-badges\"\u003e\n    \u003cspan class=\"tt-badge g\"\u003eNiacinamide 20% · 200,000ppm\u003c\/span\u003e\n    \u003cspan class=\"tt-badge g\"\u003eAlpha-Arbutin 2%\u003c\/span\u003e\n    \u003cspan class=\"tt-badge d\"\u003eRetinol Included\u003c\/span\u003e\n    \u003cspan class=\"tt-badge g\"\u003eTriple Hyaluronic Acid\u003c\/span\u003e\n    \u003cspan class=\"tt-badge n\"\u003eFragrance-Free\u003c\/span\u003e\n    \u003cspan class=\"tt-badge n\"\u003eParaben-Free · Sulfate-Free\u003c\/span\u003e\n    \u003cspan class=\"tt-badge g\"\u003eDermatologically Tested\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- INTRO --\u003e\n  \u003cp class=\"tt-label\"\u003eWhat It Is\u003c\/p\u003e\n  \u003cp class=\"tt-intro\"\u003e\n    TIRTIR Niacinamide 20% Serum is a concentrated multi-active treatment built for people who are serious about dark spots, uneven tone, enlarged pores, and dullness — and done with slow results. Most niacinamide serums top out at 5%. This one starts at 20%, stacking it with four complementary actives that each attack hyperpigmentation, oil imbalance, and skin aging from a different angle. The result: a fragrance-free, lightweight formula that absorbs fast and works systemically on tone, texture, and resilience — morning or night, every day.\n  \u003c\/p\u003e\n\n  \u003c!-- WHY 20% --\u003e\n  \u003cp class=\"tt-label\"\u003eWhy 20% Niacinamide Changes Everything\u003c\/p\u003e\n  \u003cdiv class=\"tt-why\"\u003e\n    \u003cdiv class=\"why-title\"\u003eMost serums give you a maintenance dose. This one gives you a therapeutic dose.\u003c\/div\u003e\n    \u003cdiv class=\"tt-why-grid\"\u003e\n      \u003cdiv class=\"tt-why-card\"\u003e\n        \u003cspan class=\"wc-num\"\u003e5%\u003c\/span\u003e\n        \u003cdiv class=\"wc-label\"\u003eStandard niacinamide serum concentration\u003c\/div\u003e\n        \u003cdiv class=\"wc-sub\"\u003eGood for maintenance\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"tt-why-card\"\u003e\n        \u003cspan class=\"wc-num\"\u003e20%\u003c\/span\u003e\n        \u003cdiv class=\"wc-label\"\u003eTIRTIR concentration — 200,000ppm\u003c\/div\u003e\n        \u003cdiv class=\"wc-sub\"\u003eHigh-dose treatment level\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"tt-why-card\"\u003e\n        \u003cspan class=\"wc-num\"\u003e4×\u003c\/span\u003e\n        \u003cdiv class=\"wc-label\"\u003eMore niacinamide than the typical 5% serum\u003c\/div\u003e\n        \u003cdiv class=\"wc-sub\"\u003eStronger, faster, more visible\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"tt-why-card\"\u003e\n        \u003cspan class=\"wc-num\"\u003eB3\u003c\/span\u003e\n        \u003cdiv class=\"wc-label\"\u003eVitamin B3 — one of the most studied skincare actives in the world\u003c\/div\u003e\n        \u003cdiv class=\"wc-sub\"\u003eDecades of peer-reviewed research\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-why-note\"\u003e\n      At 20%, niacinamide inhibits melanin transfer from pigment cells to skin cells — visibly fading dark spots. It also regulates sebum production, strengthens the ceramide barrier, reduces pore appearance, and soothes inflammation. These benefits are well-documented at lower concentrations; at 20%, they happen faster and more perceptibly. TIRTIR formulates at this level without fragrance or harsh alcohols, so even sensitive skin types can build tolerance.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 5-ACTIVE STACK --\u003e\n  \u003cp class=\"tt-label\"\u003eThe 5-Active Brightening Stack — What Each One Does\u003c\/p\u003e\n  \u003cdiv class=\"tt-stack\"\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eNiacinamide · 20% (200,000ppm)\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eLead Active\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eThe cornerstone of the formula. At 20%, niacinamide (Vitamin B3) inhibits the transfer of melanosomes — the cellular packages carrying pigment — to surface skin cells, progressively fading existing dark spots. Simultaneously it: regulates oil and sebum production (Zinc PCA works alongside it here), boosts ceramide synthesis to strengthen the skin barrier, visibly minimizes pore appearance, and reduces redness and blemish inflammation. One molecule, seven documented skin benefits.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eAlpha-Arbutin · 2%\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eBrightening\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eA stable, gentle tyrosinase inhibitor — meaning it blocks the enzyme directly responsible for producing melanin (the pigment that creates dark spots, post-acne marks, and sun damage). At 2%, it works synergistically alongside niacinamide to attack hyperpigmentation through two separate pathways simultaneously, making the combined effect significantly stronger than either active used alone.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eRetinol (Vitamin A)\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eAnti-Aging\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eIncluded at a functional, non-irritating concentration that supports skin cell turnover, stimulates collagen production, and helps fade post-inflammatory hyperpigmentation (the dark marks left by acne and blemishes) over time. Niacinamide and retinol are a well-documented complementary pair — niacinamide buffers retinol's potential for irritation while retinol accelerates cell renewal, amplifying the brightening results. Use this serum PM for maximum retinol benefit; always follow with SPF in the morning.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eGlutathione\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eAntioxidant\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eKnown as the \"master antioxidant,\" glutathione neutralizes free radicals that trigger oxidative stress and melanin overproduction. As a topical ingredient it contributes to a skin-brightening effect by interrupting melanin synthesis and protecting cells from environmental damage. Works as a defense layer alongside niacinamide and alpha-arbutin's direct brightening actions.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eZinc PCA\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eOil Control\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eA compound combining zinc with pyrrolidone carboxylic acid (PCA) — the skin's own natural moisturizing factor. Zinc PCA regulates sebum production, helps prevent pore congestion, has antimicrobial activity against acne-causing bacteria, and soothes skin inflammation. Makes this serum genuinely effective for oily and acne-prone skin rather than just brightening-focused types.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- SUPPORTING INGREDIENTS --\u003e\n  \u003cp class=\"tt-label\"\u003eSupporting Cast — Hydration \u0026amp; Skin Health\u003c\/p\u003e\n  \u003cdiv class=\"tt-stack\"\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eTriple Hyaluronic Acid Complex\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eHydration\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eThree molecular weights of hyaluronic acid — standard Hyaluronic Acid, Hydrolyzed Hyaluronic Acid (smaller molecules that penetrate deeper), and Sodium Hyaluronate — work at different depths in the skin simultaneously. Together they bind moisture throughout multiple skin layers, keeping skin plump and comfortable even while actives like niacinamide and retinol are working.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eMacadamia Seed Oil + Corn Kernel Extract\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eNourishing\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eMacadamia ternifolia seed oil is rich in palmitoleic acid — a fatty acid that closely mimics the skin's natural sebum composition, making it exceptionally compatible and non-greasy. It reinforces the lipid barrier and prevents transepidermal water loss. Corn kernel extract provides additional antioxidant and soothing support.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tt-active\"\u003e\n      \u003cdiv class=\"tt-active-top\"\u003e\n        \u003cdiv class=\"tt-active-name\"\u003eChitosan + Fructan\u003c\/div\u003e\n        \u003cspan class=\"tt-active-tag\"\u003eBarrier + Prebiotic\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cp\u003eChitosan is a polysaccharide derived from natural sources that forms a film on the skin, helping to retain moisture, calm blemishes, and support barrier integrity. Fructan is a plant-derived prebiotic carbohydrate that helps balance the skin microbiome — supporting the \"good bacteria\" ecosystem that keeps skin resilient and clear-looking.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- PERFECT FOR --\u003e\n  \u003cp class=\"tt-label\"\u003ePerfect For\u003c\/p\u003e\n  \u003cdiv class=\"tt-forwho\"\u003e\n    \u003cul\u003e\n      \u003cli\u003eDark spots \u0026amp; hyperpigmentation\u003c\/li\u003e\n      \u003cli\u003ePost-acne marks (PIH)\u003c\/li\u003e\n      \u003cli\u003eUneven, dull, or tired-looking skin\u003c\/li\u003e\n      \u003cli\u003eEnlarged or visible pores\u003c\/li\u003e\n      \u003cli\u003eOily \u0026amp; combination skin types\u003c\/li\u003e\n      \u003cli\u003eAcne-prone skin needing oil control\u003c\/li\u003e\n      \u003cli\u003eSkin showing early signs of aging\u003c\/li\u003e\n      \u003cli\u003eAnyone who's plateaued on 5–10% niacinamide\u003c\/li\u003e\n      \u003cli\u003eSun damage \u0026amp; uneven skin tone\u003c\/li\u003e\n      \u003cli\u003e\"Glass skin\" goals — evening and brightening\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- RESULTS TIMELINE --\u003e\n  \u003cp class=\"tt-label\"\u003eWhat to Expect — Results Timeline\u003c\/p\u003e\n  \u003cdiv class=\"tt-timeline\"\u003e\n    \u003cdiv class=\"tt-week\"\u003e\n      \u003cdiv class=\"wk\"\u003eWeek 1–2\u003c\/div\u003e\n      \u003cdiv class=\"wkd\"\u003e\n        \u003cstrong\u003eImmediate Feel Improvements\u003c\/strong\u003e\n        Skin feels smoother, more hydrated, and pores begin to look tighter. Tone starts to look more even. New blemishes may appear temporarily as niacinamide accelerates skin cell turnover at 20% — this is normal and settles.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-week\"\u003e\n      \u003cdiv class=\"wk\"\u003eWeek 3–4\u003c\/div\u003e\n      \u003cdiv class=\"wkd\"\u003e\n        \u003cstrong\u003eVisible Tone Shifts\u003c\/strong\u003e\n        Existing dark spots and post-acne marks begin to fade visibly. Oil production feels more controlled throughout the day. Skin looks more luminous without being greasy.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-week\"\u003e\n      \u003cdiv class=\"wk\"\u003eWeek 6–8\u003c\/div\u003e\n      \u003cdiv class=\"wkd\"\u003e\n        \u003cstrong\u003eSignificant Brightening + Texture Change\u003c\/strong\u003e\n        Consistent users report noticeably more even skin tone, reduced appearance of enlarged pores, and a smoother overall texture. Stubborn dark spots become less prominent. The retinol begins supporting fine line reduction at this stage.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-week\"\u003e\n      \u003cdiv class=\"wk\"\u003eMonth 3+\u003c\/div\u003e\n      \u003cdiv class=\"wkd\"\u003e\n        \u003cstrong\u003eCumulative, Lasting Results\u003c\/strong\u003e\n        Skin tone achieves a new baseline — brighter, more even, more resilient. Results compound with continued daily use. Most users report this is where the \"glass skin\" effect becomes consistently visible.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cp style=\"font-size:0.74rem; color:#aaa; margin-bottom:2rem; margin-top:-1.5rem;\"\u003e*Timeline is based on consistent daily use and individual results will vary. Hyperpigmentation treatment typically requires 8–12 weeks of continued use for visible fading. No topical product eliminates hyperpigmentation instantly.\u003c\/p\u003e\n\n  \u003c!-- HOW TO USE --\u003e\n  \u003cp class=\"tt-label\"\u003eHow To Use\u003c\/p\u003e\n  \u003cdiv class=\"tt-howto\"\u003e\n    \u003cdiv class=\"tt-step\"\u003e\n      \u003cdiv class=\"n\"\u003e1\u003c\/div\u003e\n      \u003cdiv class=\"t\"\u003e\n\u003cstrong\u003eShake Gently Before Each Use\u003c\/strong\u003eTIRTIR recommends lightly shaking the serum before dispensing to ensure actives are evenly distributed throughout the formula.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-step\"\u003e\n      \u003cdiv class=\"n\"\u003e2\u003c\/div\u003e\n      \u003cdiv class=\"t\"\u003e\n\u003cstrong\u003eApply to Clean, Dry Skin\u003c\/strong\u003eCleanse and tone first. Apply 2–3 drops to fingertips and gently press and pat into face and neck. Do not rub or drag — patting aids absorption without disrupting the formula.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-step\"\u003e\n      \u003cdiv class=\"n\"\u003e3\u003c\/div\u003e\n      \u003cdiv class=\"t\"\u003e\n\u003cstrong\u003eFocus on Concern Areas\u003c\/strong\u003ePress a small additional amount directly onto dark spots, post-acne marks, or pore-heavy zones (nose, chin, cheeks). Allow to absorb fully — approximately 30–60 seconds.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-step\"\u003e\n      \u003cdiv class=\"n\"\u003e4\u003c\/div\u003e\n      \u003cdiv class=\"t\"\u003e\n\u003cstrong\u003eLayer and Seal\u003c\/strong\u003eFollow with a moisturizer to seal in the actives and support the hydration layer. This serum plays well with most moisturizer types.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-step\"\u003e\n      \u003cdiv class=\"n\"\u003e5\u003c\/div\u003e\n      \u003cdiv class=\"t\"\u003e\n\u003cstrong\u003eAM: Always Finish with SPF\u003c\/strong\u003eThis serum contains retinol — daytime use requires a broad-spectrum SPF 30 or higher. Skipping SPF will counteract brightening results, as sun exposure re-darkens treated spots.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ROUTINE LAYERING GUIDE --\u003e\n  \u003cdiv class=\"tt-layer\"\u003e\n    \u003cdiv class=\"l-title\"\u003eRoutine Layering Guide — How to Fit This Into Your Existing Routine\u003c\/div\u003e\n    \u003cdiv class=\"tt-layer-row\"\u003e\n      \u003cspan class=\"lr-step\"\u003eAM\u003c\/span\u003e\n      \u003cdiv class=\"lr-txt\"\u003e\n\u003cstrong\u003eCleanser → Toner → TIRTIR Niacinamide 20% Serum → Moisturizer → SPF50+\u003c\/strong\u003e\u003cbr\u003eSafe to layer under any SPF. Niacinamide primes skin for hydration and shields barrier.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-layer-row\"\u003e\n      \u003cspan class=\"lr-step\"\u003ePM\u003c\/span\u003e\n      \u003cdiv class=\"lr-txt\"\u003e\n\u003cstrong\u003eCleanser → Toner → TIRTIR Niacinamide 20% Serum → Moisturizer\u003c\/strong\u003e\u003cbr\u003ePM use maximizes retinol benefit. The retinol in this formula works during overnight cell renewal cycles.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-layer-row\"\u003e\n      \u003cspan class=\"lr-step\"\u003e+AHA\/BHA\u003c\/span\u003e\n      \u003cdiv class=\"lr-txt\"\u003e\n\u003cstrong\u003eUse on alternating nights if you exfoliate.\u003c\/strong\u003e Don't layer this serum directly over a low-pH acid toner in the same step — give acids time to absorb first, or use on separate evenings.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"tt-layer-row\"\u003e\n      \u003cspan class=\"lr-step\"\u003e+Vit C\u003c\/span\u003e\n      \u003cdiv class=\"lr-txt\"\u003e\n\u003cstrong\u003eVitamin C pairs well with niacinamide\u003c\/strong\u003e — the old concern about this combination causing skin flushing is not supported by current evidence. Both can be used together safely.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- PRO TIPS --\u003e\n  \u003cdiv class=\"tt-tips\"\u003e\n    \u003cdiv class=\"tp-title\"\u003ePro Tips \u0026amp; Patch Test Guidance\u003c\/div\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAlways patch test first.\u003c\/strong\u003e Apply a small amount to the inner forearm or behind the ear for 24–48 hours before first full-face use. 20% niacinamide is potent — particularly for those who have never used niacinamide serums before.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eStart every other night.\u003c\/strong\u003e Sensitive skin types should introduce this serum 3×\/week for 2 weeks before daily use. Niacinamide is generally well tolerated, but higher concentrations can cause temporary flushing or tingling on first exposure.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eNiacin flush is temporary.\u003c\/strong\u003e A mild, brief warmth or redness immediately after application can occur with high-concentration niacinamide in some individuals. This is harmless and typically subsides within minutes. If persistent redness occurs, reduce frequency.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDo not combine with low-pH acids in the same step.\u003c\/strong\u003e Wait for acid toners to fully absorb before applying, or separate to different PM routines.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSPF is non-negotiable if using AM.\u003c\/strong\u003e Retinol and niacinamide both increase photosensitivity to varying degrees. Broad-spectrum SPF is required every morning when using this serum — otherwise you're actively slowing the brightening process.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eStore away from direct sunlight.\u003c\/strong\u003e Retinol degrades under light exposure. Keep in a cool, dark location between uses.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eConsistency is the entire game.\u003c\/strong\u003e Hyperpigmentation takes 8–12 weeks of consistent daily use to visibly fade. Weekly use will not deliver the results shown in before\/afters.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FULL INCI --\u003e\n  \u003cdiv class=\"tt-inci\"\u003e\n    \u003cdiv class=\"i-title\"\u003eFull Ingredient List (INCI)\u003c\/div\u003e\n    \u003cp\u003eWater, Niacinamide, Glycerin, Butylene Glycol, Propanediol, Alpha-Arbutin, 1,2-Hexanediol, Hydroxyacetophenone, Acrylates\/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Glycereth-25 PCA Isostearate, Ethylhexylglycerin, Caprylic\/Capric Triglyceride, Macadamia Ternifolia Seed Oil, Zea Mays (Corn) Kernel Extract, Disodium EDTA, Hydroxyethyl Acrylate\/Sodium Acryloyldimethyl Taurate Copolymer, Hydrogenated Lecithin, Retinol, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Brassica Campestris (Rapeseed) Sterols, Cholesterol, Polyglyceryl-10 Laurate, Phytosteryl\/Behenyl\/Octyldodecyl Lauroyl Glutamate, Aluminum\/Magnesium Hydroxide Stearate, Pentaerythrityl Tetra-di-t-Butyl Hydroxyhydrocinnamate, Polysorbate 60, Sorbitan Isostearate, Fructan, Potassium Cetyl Phosphate, Glucose, Chitosan, Tris(Tetramethylhydroxypiperidinol) Citrate, Glutathione, Zinc PCA\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS TABLE --\u003e\n  \u003cp class=\"tt-label\"\u003eProduct Details\u003c\/p\u003e\n  \u003ctable class=\"tt-specs\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTIRTIR (Trust In Radiance · Seoul, Korea · Est. 2016)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eNiacinamide 20% Serum\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e30ml \/ 1.01 fl oz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLead Active\u003c\/td\u003e\n\u003ctd\u003eNiacinamide 20% (200,000ppm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSupporting Actives\u003c\/td\u003e\n\u003ctd\u003eAlpha-Arbutin 2%, Retinol, Glutathione, Zinc PCA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eHydration Complex\u003c\/td\u003e\n\u003ctd\u003eTriple Hyaluronic Acid (Hyaluronic Acid + Hydrolyzed HA + Sodium Hyaluronate)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSkin Type\u003c\/td\u003e\n\u003ctd\u003eAll skin types · Especially oily, combination, acne-prone, hyperpigmentation-prone\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eKey Claims\u003c\/td\u003e\n\u003ctd\u003eBrightening · Pore-minimizing · Oil control · Anti-aging · Barrier support\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFree Of\u003c\/td\u003e\n\u003ctd\u003eFragrance · Parabens · Sulfates · Harsh alcohols\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTesting\u003c\/td\u003e\n\u003ctd\u003eDermatologically tested\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eRepublic of Korea\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eAM \u0026amp; PM · Requires SPF during AM use (contains retinol)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eDark spots, post-acne marks, uneven tone, enlarged pores, dullness\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- AUTHENTICITY NOTICE --\u003e\n  \u003cdiv class=\"tt-auth\"\u003e\n    \u003cdiv class=\"tt-auth-inner\"\u003e\n      \u003cdiv class=\"tt-auth-icon\"\u003e🛡\u003c\/div\u003e\n      \u003cdiv class=\"tt-auth-text\"\u003e\n        \u003cstrong\u003e100% Authentic — Buyer Protection Notice\u003c\/strong\u003e\n        All products sold through MIMOMART are 100% authentic and sourced directly from authorized distributors. Please be cautious of products priced suspiciously low or shipped from unauthorized third-party sellers in Asia — these may be counterfeit, diluted, or expired. Authentic TIRTIR products are manufactured in Korea and carry the brand's full quality guarantee. Your skin deserves the real thing.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/tt-wrap --\u003e\n\n\u003c\/body\u003e","brand":"MIMO MART","offers":[{"title":"Default Title","offer_id":45885131063398,"sku":null,"price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/7712\/0614\/files\/20____1-1.webp?v=1782941982","url":"https:\/\/mimomart.com\/products\/tirtir-niacinamide-20-serum-30ml","provider":"MIMO MART","version":"1.0","type":"link"}