{"title":"Niacinamide Skincare — Vitamin B3 Serums and Formulas for Sensitive, Oily, and Acne-Prone Skin","description":"\u003ch2\u003eWhat Niacinamide Does — and Why Concentration Matters\u003c\/h2\u003e\n\u003cp\u003eNiacinamide is the amide form of vitamin B3 and a precursor of NAD⁺ — nicotinamide adenine dinucleotide — an essential coenzyme involved in cellular energy production and DNA repair. In skin, NAD⁺ levels decline with age, which contributes to slower cell repair, weakened barrier function, and increased visible aging. Topical niacinamide helps replenish this pathway.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAt the skin surface, niacinamide works through multiple simultaneous mechanisms. It stimulates ceramide synthesis, which directly strengthens the lipid barrier and reduces transepidermal water loss. It inhibits the transfer of melanosomes from melanocytes to keratinocytes, which is the mechanism responsible for its visible brightening and hyperpigmentation-reducing effect. It regulates sebaceous gland activity, reducing excess sebum without stripping. And it exerts measurable anti-inflammatory activity, making it particularly effective for acne-prone, rosacea-adjacent, and reactive skin that does not tolerate more aggressive actives.\u003c\/p\u003e\n\u003ch3\u003e5% vs 10% — which concentration is right\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e5% niacinamide\u003c\/strong\u003e is the concentration at which brightening, barrier support, and redness reduction are clinically documented. It is appropriate for daily use across all skin types, including the most sensitive, and is the concentration used in several By Valenti formulas paired with complementary actives.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10% niacinamide\u003c\/strong\u003e delivers stronger sebum regulation, more visible pore refinement, and faster results on uneven tone and post-acne marks. The Aqua b3 serum is formulated at 10% in a minimalist base — no zinc, no alcohol, no fillers — making it one of the few 10% niacinamide formulas suitable for sensitive skin without the irritation risk associated with high-concentration zinc combinations.\u003c\/p\u003e\n\u003ch2\u003eBy Valenti Niacinamide Formulas\u003c\/h2\u003e\n\u003ch3\u003eAqua b3 — 10% Niacinamide Serum\u003c\/h3\u003e\n\u003cp\u003eA lightweight, crystal-clear water-based serum delivering 10% niacinamide alongside sea kelp bioferment and humectants. Formulated without zinc, fragrance, alcohol, or essential oils. Suitable for all skin types including sensitive, teenage, and acne-prone skin. Targets enlarged pores, redness, uneven texture, and excess sebum. Fast-absorbing. Daily AM and PM use.\u003c\/p\u003e\n\u003ch3\u003eBarcola Azzurro Mare Replenishing Elixir — 5% Niacinamide + Hyaluronic Acid Serum\u003c\/h3\u003e\n\u003cp\u003eAn award-winning oil-free serum combining 5% niacinamide with low and high molecular weight hyaluronic acid and sea kelp bioferment. Targets barrier repair, multi-depth hydration, and skin texture simultaneously. Designed for sensitive skin. Fragrance-free. Contains no essential oils — suitable for use during pregnancy and breastfeeding.\u003c\/p\u003e\n\u003ch3\u003eAzzurrino Bi-Phase Brightening Serum — Niacinamide + Vitamin C\u003c\/h3\u003e\n\u003cp\u003eA bi-phase serum combining niacinamide and vitamin C to target uneven skin tone, post-acne marks, and dullness alongside hyaluronic acid and olive squalane for hydration and barrier support. Results visible in 1–3 weeks with twice-daily use.\u003c\/p\u003e\n\u003ch3\u003eRoses \u0026amp; Hibiscus Toner — 5% Niacinamide\u003c\/h3\u003e\n\u003cp\u003eA lightweight toner-serum hybrid with in-house formulated hibiscus and rose extracts, 5% niacinamide, and provitamin B5. Refreshes, hydrates, and prepares skin for active absorption. Suitable for all skin types. Can be used as a toner or throughout the day as a facial mist.\u003c\/p\u003e\n\u003ch3\u003eRoses \u0026amp; Hibiscus Serum — 5% Niacinamide + Hyaluronic Acid\u003c\/h3\u003e\n\u003cp\u003eA hydrating toner-serum hybrid combining niacinamide, hyaluronic acid, and botanical extracts to address redness, dehydration, and uneven tone in a single application. Lightweight formula suitable for sensitive and dry skin.\u003c\/p\u003e\n\u003ch2\u003eWho Niacinamide Skincare Is For\u003c\/h2\u003e\n\u003cp\u003eNiacinamide is one of the few high-performance actives with no meaningful exclusion criteria by skin type. It is documented to benefit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOily and combination skin\u003c\/strong\u003e — regulates sebum, reduces shine, minimizes pore appearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcne-prone skin\u003c\/strong\u003e — anti-inflammatory, reduces post-acne marks, does not promote purging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive and reactive skin\u003c\/strong\u003e — strengthens barrier, reduces redness, well-tolerated at both 5% and 10%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry and dehydrated skin\u003c\/strong\u003e — stimulates ceramide production, supports moisture retention\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAging and mature skin\u003c\/strong\u003e — reduces fine lines, improves elasticity, addresses hyperpigmentation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHyperpigmented skin\u003c\/strong\u003e — inhibits melanin transfer, visibly brightens uneven tone over consistent use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Use Niacinamide in Your Routine\u003c\/h2\u003e\n\u003cp\u003eNiacinamide is compatible with most other active ingredients including hyaluronic acid, vitamin C, bakuchiol, AHAs, BHAs, and peptides. It does not require isolation from other actives and can be used morning and evening.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eLayering order\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eApply niacinamide after cleansing and toning, before heavier serums, oils, or moisturizers. In a multi-serum routine, apply water-based formulas before oil-based ones.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eWith vitamin C\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eNiacinamide and vitamin C are compatible when used in stable, well-formulated products. The concern about niacin flush from combining them is based on outdated research involving unstable forms of vitamin C and niacin rather than niacinamide. Modern stable vitamin C formulations do not produce this reaction.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eCan niacinamide be used every day?\u003c\/h3\u003e\n\u003cp\u003eYes. Niacinamide does not cause photosensitivity, purging, or an adjustment period. It is one of the safest daily-use actives at both 5% and 10% concentrations.\u003c\/p\u003e","products":[{"product_id":"roses-facial-toner","title":"Tónico Facial de Rosas e Hibisco con Niacinamida para Piel Seca","description":"\u003cp data-start=\"1118\" data-end=\"1199\"\u003eTónico facial multiuso formulado para hidratar, reequilibrar y refrescar la piel.\u003c\/p\u003e\n\u003cp data-start=\"1201\" data-end=\"1449\"\u003eLos extractos de rosa e hibisco ayudan a tonificar y calmar, mientras que la niacinamida favorece una textura mejorada y una claridad visible. La fórmula ligera puede utilizarse como tónico o bruma facial para revitalizar la tez a lo largo del día.\u003c\/p\u003e\n\u003cp data-start=\"1451\" data-end=\"1483\"\u003eAdecuado para todo tipo de piel.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"100 ml","offer_id":47585961115898,"sku":"FT0004","price":39.0,"currency_code":"USD","in_stock":true},{"title":"50 ml recarga","offer_id":47585961148666,"sku":"FT0004-r","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-roses-and-hibiscus-toner.webp?v=1767070577"},{"product_id":"roses-hibiscus-serum","title":"Suero Ligero Súper Hidratante de Rosas e Hibisco, Ácido Hialurónico y Niacinamida","description":"\u003cp data-start=\"1644\" data-end=\"1730\"\u003eTratamiento facial multiuso formulado para hidratar, reequilibrar y refrescar la piel.\u003c\/p\u003e\n\u003cp data-start=\"1732\" data-end=\"2068\"\u003eEl hidrolato de rosa y el hibisco ayudan a calmar y tonificar. El ácido hialurónico favorece una hidratación sostenida. La niacinamida ayuda a refinar la textura de la piel y a reducir el enrojecimiento visible, mientras que la vitamina B5 y el ácido salicílico favorecen la claridad cutánea y la renovación de la superficie de la piel.\u003c\/p\u003e\n\u003cp data-start=\"2070\" data-end=\"2118\"\u003eFórmula ligera. Adecuado para todo tipo de piel.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"100 ml","offer_id":47585957970170,"sku":"SERUM0001","price":49.0,"currency_code":"USD","in_stock":true},{"title":"50 ml recarga","offer_id":47585958002938,"sku":"SERUM0001-r","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-roses-and-hibiscus-niacinamide-toner.webp?v=1767070333"},{"product_id":"barcola-replenishing-elixir","title":"Barcola Azzurro Mare Elixir Rehidratante","description":"\u003cp data-start=\"1275\" data-end=\"1454\"\u003eSérum facial sin aceite con ácido hialurónico y niacinamida para mejorar la textura de la piel, reforzar la barrera cutánea y reponer la hidratación. Formulado para piel sensible.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1456\" data-end=\"1794\"\u003eÁcido hialurónico (bajo y alto peso molecular) – Hidratación en múltiples niveles, efecto rellenador\u003c\/li\u003e\n\u003cli data-start=\"1456\" data-end=\"1794\"\u003eNiacinamida (5 %) – Equilibra el sebo, refuerza la barrera, ayuda a afinar los poros\u003c\/li\u003e\n\u003cli data-start=\"1456\" data-end=\"1794\"\u003eBiofermento de algas marinas – Rico en nutrientes, ayuda a calmar la piel\u003c\/li\u003e\n\u003cli data-start=\"1456\" data-end=\"1794\"\u003eHidrolatos de rosa y pepino – Refrescan suavemente sin sensibilizantes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"by valenti","offers":[{"title":"30 ml","offer_id":44667179761914,"sku":"TRST0002","price":140.0,"currency_code":"USD","in_stock":true},{"title":"15 ml","offer_id":44836285612282,"sku":"TRST0002-t","price":70.0,"currency_code":"USD","in_stock":true},{"title":"30 ml recarga","offer_id":45770027106554,"sku":"TRST0002-rl","price":140.0,"currency_code":"USD","in_stock":true},{"title":"15 ml recarga","offer_id":45770027139322,"sku":"TRST0002-rs","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-barcola-azzurro-mare.webp?v=1772247136"},{"product_id":"aqua-b3-niacinamide-serum","title":"Aqua B3 Sérum facial acuoso","description":"\u003cp data-start=\"1327\" data-end=\"1638\"\u003eDiseñado para refinar la textura de la piel, equilibrar la producción de sebo, calmar el enrojecimiento y reforzar la barrera cutánea mediante una fórmula minimalista de base acuosa con un 10 % de niacinamida. De rápida absorción y apto para todo tipo de piel, incluida la piel sensible y con tendencia acneica.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003eSérum de niacinamida con 8 ingredientes\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003e10 % de niacinamida + biofermento de algas marinas — rico en minerales y polisacáridos\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003eReduce visiblemente el enrojecimiento. Afina los poros. Equilibra el sebo. Hidrata.\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003ePara todo tipo de piel — incluida la piel adolescente\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003eSin fragancia. Sin alcohol. Ligero y de rápida absorción\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003eDiseñado dermatológicamente para adolescentes y adultos\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"2084\"\u003e86 % de ingredientes de origen natural\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"by valenti","offers":[{"title":"30 ml","offer_id":44754254463226,"sku":"TRST0004","price":76.0,"currency_code":"USD","in_stock":true},{"title":"15 ml","offer_id":45769991553274,"sku":"TRST0004-rl","price":35.0,"currency_code":"USD","in_stock":true},{"title":"30 ml recarga","offer_id":47209900114170,"sku":null,"price":76.0,"currency_code":"USD","in_stock":true},{"title":"15 ml recarga","offer_id":47209900146938,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/aquab3niacinamideserum-1.webp?v=1769875733"},{"product_id":"l-essenza-triestina-repair-bundle","title":"L’Essenza Triestina Set Reparador","description":"\u003cp data-start=\"1548\" data-end=\"1756\"\u003eSet formulado para mejorar la suavidad de la piel, la elasticidad y el equilibrio general. Adecuado para pieles que presentan signos de sensibilidad, desequilibrio o envejecimiento prematuro.\u003c\/p\u003e\n\u003cp data-start=\"1758\" data-end=\"1958\"\u003e\u003cstrong data-start=\"1758\" data-end=\"1787\"\u003eBakuchiol Serum Alisador\u003c\/strong\u003e\u003cbr data-start=\"1787\" data-end=\"1790\"\u003eEl 1 % de bakuchiol ayuda a refinar la textura y a reducir la apariencia de las primeras líneas, al tiempo que favorece la calma cutánea y el equilibrio de hidratación.\u003c\/p\u003e\n\u003cp data-start=\"1960\" data-end=\"2224\"\u003e\u003cstrong data-start=\"1960\" data-end=\"1992\"\u003eBakuchiol Crema Reparadora Nocturna\u003c\/strong\u003e\u003cbr data-start=\"1992\" data-end=\"1995\"\u003eEl 1 % de bakuchiol y el 0,3 % de palmitato de retinilo favorecen la renovación cutánea durante la noche. Las ceramidas, el ácido hialurónico y el escualano de oliva ayudan a mantener la integridad de la barrera y la hidratación.\u003c\/p\u003e\n\u003cp data-start=\"2226\" data-end=\"2358\"\u003e\u003cstrong data-start=\"2226\" data-end=\"2236\"\u003eBonus:\u003c\/strong\u003e Sérum Aqua B3 con 10 % de niacinamida y biofermento de alga marina para ayudar a refinar la textura y equilibrar el sebo.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"Default Title","offer_id":47698006114554,"sku":null,"price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-lessenza-triestina-1.webp?v=1763215874"},{"product_id":"aqua-b3-10-niacinamide-aqueous-serum-olio-di-c-10-vitamin-c-lipid-serum-bundle","title":"Duo Aqua B3 + Olio di C","description":"\u003cp data-start=\"1289\" data-end=\"1394\"\u003eDúo de sérums a base acuosa y lipídica diseñado para favorecer el equilibrio y la luminosidad de la piel.\u003c\/p\u003e\n\u003cp data-start=\"1396\" data-end=\"1407\"\u003e\u003cstrong data-start=\"1396\" data-end=\"1407\"\u003eAqua B3\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1409\" data-end=\"1705\"\u003eNiacinamida (10 %): Ayuda a regular el sebo, afinar la textura de la piel y reforzar la barrera cutánea\u003c\/li\u003e\n\u003cli data-start=\"1409\" data-end=\"1705\"\u003eBiofermento de algas marinas: Aporta hidratación y favorece el equilibrio cutáneo\u003c\/li\u003e\n\u003cli data-start=\"1409\" data-end=\"1705\"\u003eSorbitol + propanediol 1,3: Humectantes que ayudan a mantener la hidratación y la elasticidad de la piel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1707\" data-end=\"1720\"\u003e\u003cstrong data-start=\"1707\" data-end=\"1720\"\u003eOlio di C\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1722\" data-end=\"2034\"\u003eVitamina C (10 % tetrahexildecilo ascorbato): Antioxidante liposoluble que ayuda a mejorar la luminosidad y la uniformidad del tono\u003c\/li\u003e\n\u003cli data-start=\"1722\" data-end=\"2034\"\u003eEscualano de oliva: Refuerza la barrera lipídica y limita la pérdida de humedad\u003c\/li\u003e\n\u003cli data-start=\"1722\" data-end=\"2034\"\u003eTanaceto azul: Aporta propiedades calmantes y ayuda a reducir la apariencia del enrojecimiento\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"by valenti","offers":[{"title":"Default Title","offer_id":47725401112826,"sku":null,"price":167.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-oliodic-aquab3-bundle-2.webp?v=1766284563"},{"product_id":"azzurrino-bi-phase-superb-brightening-serum","title":"Azzurrino Sérum bifásico de alta acción iluminadora","description":"\u003cp\u003eSérum bifásico ligero que se absorbe rápidamente sin dejar residuos. Inspirado en el mar Adriático, formulado para hidratar, iluminar visiblemente y ayudar a equilibrar la producción de sebo para una piel de aspecto más claro y uniforme.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLa niacinamida y la vitamina C actúan sobre el tono desigual.\u003c\/li\u003e\n\u003cli\u003eLa niacinamida ayuda a mejorar las marcas post-acné para una piel visiblemente más clara.\u003c\/li\u003e\n\u003cli\u003eEl ácido hialurónico y el biofermento de alga marina hidratan y aportan efecto rellenador.\u003c\/li\u003e\n\u003cli\u003eEl escualano de oliva refuerza la barrera natural de la piel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eApto para todo tipo de piel. Resultados en 1–3 semanas.\u003c\/p\u003e\n\u003cp\u003e92,8 % de ingredientes de origen natural.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"Default Title","offer_id":47928164581626,"sku":"SERUM0003","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-azzurrino-bi-phase-superb-brightening-serum.webp?v=1768774966"},{"product_id":"trieste-smoothing-eye-renewal-mask","title":"Mascarilla Renovadora Suavizante para el Contorno de Ojos Trieste","description":"\u003cp data-start=\"1106\" data-end=\"1479\"\u003eEl extracto de espirulina, el biofermento de algas marinas, el ácido hialurónico y la niacinamida al 5 % proporcionan hidratación ligera para favorecer una apariencia más uniforme y equilibrada del contorno de ojos. El bálsamo, con CoQ10, retinol y vitamina C, sella la hidratación y ayuda a suavizar la apariencia de líneas finas y otros signos visibles de envejecimiento.\u003c\/p\u003e\n\u003cp data-start=\"1481\" data-end=\"1578\"\u003eCon el uso regular, la piel alrededor de los ojos se percibe más suave, hidratada y revitalizada.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"Default Title","offer_id":48083872448762,"sku":null,"price":157.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/by-valenti-eye-gift-set_page1.webp?v=1766276869"},{"product_id":"the-building-blocks-brightening-set","title":"The Building Blocks Brightening Set","description":"\u003cp\u003eA three-step routine designed to improve the appearance of uneven skin tone, dullness, and visible discoloration. This set supports brighter-looking skin while maintaining barrier function without irritation.\u003c\/p\u003e\n\u003cp\u003eUneven skin tone is often misinterpreted as excess pigmentation. In many cases, the issue lies in irregular melanin distribution, barrier disruption, and oxidative stress rather than overproduction alone.\u003c\/p\u003e\n\u003cp\u003eSuitable for all skin types including reactive skins it contains: a foaming cleanser, a barrier support serum with 10% niacinamide and brightening serum. with 10% vitamin C tetrahexyldecyl ascorbate (THDA). \u003c\/p\u003e\n\u003cp\u003eVitamin C THDA inhibits the enzyme (tyrosinase) responsible for producing melanin, while niacinamide inhibits the transfer of pigment to skin cells. The result is reduction of dark and brown spots without irritation.\u003c\/p\u003e","brand":"by valenti","offers":[{"title":"Default Title","offer_id":48521968058618,"sku":null,"price":206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/files\/byvalenti-building-blocks-brightening-set-2.webp?v=1774359524"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/2227\/0458\/collections\/newsletter-byvalenti-aquab3niacinamideserum-2.webp?v=1779399569","url":"https:\/\/es.byvalenti.com\/collections\/niacinamide-serum.oembed","provider":"By Valenti","version":"1.0","type":"link"}