{"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":"Lotion Tonique Visage à la Rose \u0026 à l’Hibiscus avec Niacinamide pour Peaux Sèches","description":"\u003cp data-start=\"1788\" data-end=\"1881\"\u003eLotion tonique visage multi-usage formulée pour hydrater, rééquilibrer et rafraîchir la peau.\u003c\/p\u003e\n\u003cp data-start=\"1883\" data-end=\"2168\"\u003eLes extraits de rose et d’hibiscus aident à tonifier et apaiser la peau, tandis que la niacinamide soutient une amélioration de la texture et une clarté visible. La formule légère peut être utilisée comme lotion tonique ou brume visage pour raviver le teint tout au long de la journée.\u003c\/p\u003e\n\u003cp data-start=\"2170\" data-end=\"2204\"\u003eConvient à tous les types de peau.\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 recharge","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":"Sérum Léger Super-Hydratant à la Rose \u0026 à l’Hibiscus","description":"\u003cp data-start=\"2872\" data-end=\"2954\"\u003eSoin visage multi-usage formulé pour hydrater, rééquilibrer et rafraîchir la peau.\u003c\/p\u003e\n\u003cp data-start=\"2956\" data-end=\"3283\"\u003eL’hydrolat de rose et l’hibiscus aident à apaiser et à tonifier. L’acide hyaluronique soutient une hydratation durable. La niacinamide aide à affiner le grain de peau et à réduire les rougeurs visibles, tandis que la vitamine B5 et l’acide salicylique favorisent la clarté de la peau et le renouvellement de la surface cutanée.\u003c\/p\u003e\n\u003cp data-start=\"3285\" data-end=\"3335\"\u003eFormule légère. Convient à tous les types de peau.\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 recharge","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 Élixir Réhydratant","description":"\u003cp data-start=\"2234\" data-end=\"2429\"\u003eSérum visage sans huile à l’acide hyaluronique et à la niacinamide pour améliorer la texture de la peau, soutenir la barrière cutanée et restaurer l’hydratation. Formulé pour les peaux sensibles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2431\" data-end=\"2795\"\u003eAcide hyaluronique (faible et haut poids moléculaire) – Hydratation multi-niveaux, effet repulpant\u003c\/li\u003e\n\u003cli data-start=\"2431\" data-end=\"2795\"\u003eNiacinamide (5 %) – Équilibre le sébum, soutient la barrière cutanée, aide à affiner les pores\u003c\/li\u003e\n\u003cli data-start=\"2431\" data-end=\"2795\"\u003eBioferment d’algues marines – Riche en nutriments, aide à apaiser la peau\u003c\/li\u003e\n\u003cli data-start=\"2431\" data-end=\"2795\"\u003eHydrolats de rose et de concombre – Rafraîchissent en douceur sans agents sensibilisants\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 recharge","offer_id":45770027106554,"sku":"TRST0002-rl","price":140.0,"currency_code":"USD","in_stock":true},{"title":"15 ml recharge","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 visage aqueux","description":"\u003cp data-start=\"2566\" data-end=\"2873\"\u003eConçu pour affiner le grain de peau, équilibrer la production de sébum, apaiser les rougeurs et soutenir la fonction barrière grâce à une formule minimaliste à base d’eau contenant 10 % de niacinamide. Absorption rapide, adapté à tous les types de peau, y compris les peaux sensibles et à tendance acnéique.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003eSérum à la niacinamide composé de 8 ingrédients\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003e10 % de niacinamide + bioferment d’algues marines — riche en minéraux et polysaccharides\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003eRéduit visiblement les rougeurs. Affine les pores. Équilibre le sébum. Hydrate.\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003ePour tous les types de peau — y compris les peaux adolescentes\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003eSans parfum. Sans alcool. Léger et à absorption rapide\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003eConçu dermatologiquement pour les adolescents et les adultes\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"3337\"\u003e86 % d’ingrédients d’origine naturelle\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 recharge","offer_id":47209900114170,"sku":null,"price":76.0,"currency_code":"USD","in_stock":true},{"title":"15 ml recharge","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 Coffret Réparateur","description":"\u003cp data-start=\"2917\" data-end=\"3126\"\u003eSystème en deux étapes formulé pour améliorer la douceur de la peau, l’élasticité et l’équilibre global. Convient aux peaux présentant des signes de sensibilité, de déséquilibre ou de vieillissement prématuré.\u003c\/p\u003e\n\u003cp data-start=\"3128\" data-end=\"3320\"\u003e\u003cstrong data-start=\"3128\" data-end=\"3158\"\u003eSérum Lissant au Bakuchiol\u003c\/strong\u003e\u003cbr data-start=\"3158\" data-end=\"3161\"\u003eLe bakuchiol à 1 % aide à affiner le grain de peau et à réduire l’apparence des premières rides, tout en soutenant l’apaisement cutané et l’équilibre hydrique.\u003c\/p\u003e\n\u003cp data-start=\"3322\" data-end=\"3599\"\u003e\u003cstrong data-start=\"3322\" data-end=\"3364\"\u003eCrème de Nuit Réparatrice au Bakuchiol\u003c\/strong\u003e\u003cbr data-start=\"3364\" data-end=\"3367\"\u003eLe bakuchiol à 1 % et le palmitate de rétinyle à 0,3 % soutiennent le renouvellement cutané nocturne. Les céramides, l’acide hyaluronique et le squalane d’olive aident à maintenir l’intégrité de la barrière cutanée et l’hydratation.\u003c\/p\u003e\n\u003cp data-start=\"3601\" data-end=\"3752\"\u003e\u003cstrong data-start=\"3601\" data-end=\"3612\"\u003eBonus :\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eSérum Aqua B3 avec 10 % de niacinamide et bioferment d’algues marines pour aider à affiner la texture et équilibrer la production de sébum.\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=\"2266\" data-end=\"2362\"\u003eDuo de sérums à base aqueuse et lipidique conçu pour soutenir l’équilibre et l’éclat de la peau.\u003c\/p\u003e\n\u003cp data-start=\"2364\" data-end=\"2375\"\u003e\u003cstrong data-start=\"2364\" data-end=\"2375\"\u003eAqua B3\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2377\" data-end=\"2685\"\u003eNiacinamide (10 %) : Aide à réguler le sébum, affiner le grain de peau et soutenir la barrière cutanée\u003c\/li\u003e\n\u003cli data-start=\"2377\" data-end=\"2685\"\u003eBioferment d’algues marines : Contribue à l’hydratation et au maintien de l’équilibre cutané\u003c\/li\u003e\n\u003cli data-start=\"2377\" data-end=\"2685\"\u003eSorbitol + propanediol 1,3 : Agents humectants aidant à préserver l’hydratation et la souplesse de la peau\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2687\" data-end=\"2700\"\u003e\u003cstrong data-start=\"2687\" data-end=\"2700\"\u003eOlio di C\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2702\" data-end=\"2992\"\u003eVitamine C (10 % ascorbate de tétrahexyldécyle) : Antioxydant liposoluble soutenant l’éclat et l’uniformité du teint\u003c\/li\u003e\n\u003cli data-start=\"2702\" data-end=\"2992\"\u003eSqualane d’olive : Renforce la barrière lipidique et limite la perte en eau\u003c\/li\u003e\n\u003cli data-start=\"2702\" data-end=\"2992\"\u003eTanaisie bleue : Apporte des propriétés apaisantes et aide à atténuer les rougeurs visibles\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 biphasé à l’action illuminante intense","description":"\u003cp\u003eSérum biphasé léger qui pénètre rapidement sans laisser de résidu. Inspiré de la mer Adriatique, formulé pour hydrater, illuminer visiblement et aider à équilibrer la production de sébum pour un teint plus net et plus uniforme.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLa niacinamide et la vitamine C ciblent le teint irrégulier.\u003c\/li\u003e\n\u003cli\u003eLa niacinamide aide à atténuer les marques post-acné pour une peau visiblement plus nette.\u003c\/li\u003e\n\u003cli\u003eL’acide hyaluronique et le bioferment d’algues marines hydratent et repulpent la peau.\u003c\/li\u003e\n\u003cli\u003eLe squalane d’olive soutient la barrière cutanée naturelle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConvient à tous les types de peau. Résultats en 1 à 3 semaines.\u003c\/p\u003e\n\u003cp\u003e92,8 % d’ingrédients d’origine naturelle.\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":"Masque Lissant Renouvelant pour le Contour des Yeux Trieste","description":"\u003cp data-start=\"1848\" data-end=\"2219\"\u003eL’extrait de spiruline, le bioferment d’algues marines, l’acide hyaluronique et la niacinamide à 5 % apportent une hydratation légère pour soutenir un contour des yeux d’apparence plus uniforme et équilibrée. Le baume, enrichi en coenzyme Q10, rétinol et vitamine C, aide à sceller l’hydratation et à atténuer l’apparence des ridules et d’autres signes visibles de l’âge.\u003c\/p\u003e\n\u003cp data-start=\"2221\" data-end=\"2328\"\u003eAvec une utilisation régulière, la peau du contour des yeux paraît plus lisse, plus hydratée et rafraîchie.\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:\/\/fr.byvalenti.com\/collections\/niacinamide-serum.oembed","provider":"By Valenti","version":"1.0","type":"link"}