{"id":9770,"date":"2026-01-18T20:10:55","date_gmt":"2026-01-18T16:10:55","guid":{"rendered":"https:\/\/metrolly.com\/?post_type=product&#038;p=9770"},"modified":"2026-06-20T19:14:39","modified_gmt":"2026-06-20T15:14:39","slug":"tirtir-niacinamide-20-serum","status":"publish","type":"product","link":"https:\/\/metrolly.com\/index.php\/product\/tirtir-niacinamide-20-serum\/","title":{"rendered":"TIRTIR &#8211; Niacinamide 20% Serum"},"content":{"rendered":"<h3>TIRTIR Niacinamide 20% Serum \u2013 Brighten, Hydrate, and Smooth for Radiant Skin<\/h3>\n<p>TIRTIR Niacinamide 20% Serum is a high-performance brightening serum formulated to fade blemishes, reduce hyperpigmentation, and visibly minimize enlarged pores. Powered by an advanced blend of 20% niacinamide, alpha-arbutin, glutathione, and multiple types of hyaluronic acid, this serum delivers intensive brightening, hydration, and anti-aging care for a smooth, luminous, youthful complexion.<\/p>\n<h3>Key Benefits of TIRTIR Niacinamide 20% Serum<\/h3>\n<ul>\n<li><strong>20% Niacinamide for Brightening and Pore Refining<\/strong><br \/>\nHelps visibly reduce blemishes and dark spots while tightening the appearance of pores for a more even and refined skin texture.<\/li>\n<li><strong>Advanced Brightening Complex<\/strong><br \/>\nAlpha-Arbutin and Glutathione work together to enhance radiance, diminish hyperpigmentation, and promote a brighter, clearer complexion.<\/li>\n<li><strong>Deep Hydration and Skin Barrier Support<\/strong><br \/>\nMultiple forms of hyaluronic acid provide long-lasting hydration, lock in moisture, and strengthen the skin barrier to improve elasticity and resilience.<\/li>\n<li><strong>Anti-Aging Care with Retinol and Zinc PCA<\/strong><br \/>\nHelps reduce the appearance of fine lines and wrinkles while calming irritation and maintaining optimal oil and moisture balance.<\/li>\n<li><strong>Lightweight, Fast-Absorbing Texture<\/strong><br \/>\nAbsorbs quickly without heaviness, leaving the skin smooth, refreshed, and ready for the next skincare steps.<\/li>\n<li><strong>Dermatologically Tested and Suitable for All Skin Types<\/strong><br \/>\nClinically tested to improve skin tone and texture, making it suitable even for sensitive skin.<\/li>\n<\/ul>\n<h3>Why Choose TIRTIR Niacinamide 20% Serum?<\/h3>\n<p>TIRTIR Niacinamide 20% Serum offers a comprehensive solution for brightening, hydration, pore care, and anti-aging in one powerful formula. By combining high-strength niacinamide with advanced brightening agents, hydrating hyaluronic acids, and skin-balancing ingredients, this serum helps restore clarity, smoothness, and youthful radiance to the skin. An essential addition to any results-driven skincare routine.<\/p>\n<h3>How do I use the TIRTIR Niacinamide 20% Serum?<\/h3>\n<p>Apply 2\u20133 drops to your face after cleansing and toning. Gently pat it into your skin until absorbed. Follow with a moisturizer and SPF in the morning.<br \/>\nThis serum is suitable for daily use, both morning and night, for optimal results.<br \/>\nThe serum is dermatologically tested and formulated to be gentle, making it ideal for sensitive skin types.<br \/>\nThe 20% niacinamide, along with alpha-arbutin and glutathione, works to fade acne scars and blemishes while promoting an even skin tone.<br \/>\nThe lightweight formula and inclusion of zinc PCA help balance oil production, making it great for oily or combination skin.<\/p>\n<h3>Ingredients<\/h3>\n<p>Aqua\/Water\/Eau, 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 Kernel Extract, Disodium EDTA, Hydroxyethyl Acrylate\/Sodium Acryloyldimethyl Taurate Copolymer, Hydrogenated Lecithin, Retinol, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Brassica Campestris 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<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Size: 30 ml<\/p>\n<p>TIRTIR Niacinamide 20% Serum is a high-strength brightening serum with niacinamide, alpha-arbutin, glutathione, and hyaluronic acid to refine pores, hydrate deeply, and reveal smooth, radiant skin.<\/p>\n","protected":false},"featured_media":9774,"comment_status":"open","ping_status":"closed","template":"","meta":{"inline_featured_image":false},"product_brand":[434],"product_cat":[440,119,128],"product_tag":[],"class_list":["post-9770","product","type-product","status-publish","has-post-thumbnail","product_brand-tirtir","product_cat-tirtir","product_cat-facial-serum","product_cat-skin-brightener","tm-no-options","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/product\/9770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/comments?post=9770"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/media\/9774"}],"wp:attachment":[{"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/media?parent=9770"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=9770"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=9770"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/metrolly.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=9770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}