{"product_id":"nioxin-system-2-leave-in-scalp-hair-thickening-treatment-6-7-fl-oz-niacinamide-biotin-for-thinning-natural-hair","title":"NIOXIN System 2 Leave-In Scalp \u0026 Hair Thickening Treatment, 6.7 fl oz — Niacinamide \u0026 Biotin for Thinning Natural Hair","description":"\u003cstrong\u003eNioxin System 2 Scalp \u0026amp; Hair Thickening Leave-In Treatment is a salon-grade leave-in formula that nourishes the scalp and helps strengthen natural hair with progressed thinning for thicker-looking results.\u003c\/strong\u003e\n\n\u003cp\u003eDesigned as the final step in Nioxin's three-part System 2 regimen, this leave-in treatment supports a refreshed scalp environment and improved hair structure without rinsing. The lightweight formula combines niacinamide, biotin, antioxidants and botanicals to target the scalp and hair shaft, helping reduce breakage and promote the appearance of fuller, denser hair when used consistently with the matching Cleanser and Scalp Therapy Conditioner.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this treatment support fragile, thinning natural hair?\u003c\/h3\u003e\n\u003cp\u003eThe formula focuses on strengthening hair from the scalp to the strand by delivering nutrients and protective agents where they matter most. It aims to reduce breakage that contributes to visible thinning and to create a healthier surface for hair to appear fuller.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNiacinamide and biotin help fortify the hair fiber and support scalp function.\u003c\/li\u003e\n  \u003cli\u003eAntioxidants and botanicals soothe and nourish the scalp, reducing buildup.\u003c\/li\u003e\n  \u003cli\u003eLightweight, non-greasy leave-in texture leaves hair manageable and primed for styling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat results can I expect and when might I see them?\u003c\/h3\u003e\n\u003cp\u003eClinical feedback and consumer studies on the Nioxin System report visible changes in hair thickness and density with routine use. Individual timelines vary, but many users notice improved fullness and reduced breakage within weeks of following the full System 2 routine.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVisible thickening and increased hair fullness reported by many users in about 30 days.\u003c\/li\u003e\n  \u003cli\u003eReductions in breakage with consistent daily application to the scalp.\u003c\/li\u003e\n  \u003cli\u003eScalp clarity and healthier-looking hair as the system removes excess sebum and debris.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use this leave-in treatment for best effect?\u003c\/h3\u003e\n\u003cp\u003eApply directly to a clean scalp as the final step in the System 2 three-part program. Gentle massage distributes the formula; do not rinse—style as usual. Daily use is recommended for ongoing scalp nourishment and hair resilience.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse after Nioxin System 2 Cleanser Shampoo and Scalp Therapy Conditioner for complete results.\u003c\/li\u003e\n  \u003cli\u003eApply evenly across the entire scalp, then massage in; no rinsing required.\u003c\/li\u003e\n  \u003cli\u003eUse every day to maintain a refreshed scalp environment and help minimize breakage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this treatment be combined with styling products and color services?\u003c\/h3\u003e\n\u003cp\u003eYes. The treatment is formulated to sit comfortably beneath styling products and can be used alongside regular salon color or chemical services, though professional advice is recommended for complex treatments. Its non-heavy finish helps preserve style while delivering scalp-targeted benefits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with daily styling products; won’t weigh hair down when used sparingly.\u003c\/li\u003e\n  \u003cli\u003eWorks with salon color, but consult your stylist for personalized timing and sequencing.\u003c\/li\u003e\n  \u003cli\u003eProtective antioxidants and UV-protecting ingredients help guard hair during exposure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Nioxin System 2 Scalp \u0026amp; Hair Thickening Leave-In Treatment is intended for people with natural hair experiencing progressed thinning who want a salon-backed, daily leave-in that targets scalp health and reduces breakage. It’s best for those following Nioxin’s System 2 regimen and anyone seeking a lightweight, professional-strength product to enhance hair density appearance and support stronger strands.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eWater\/Aqua, Phenylbenzimidazole Sulfonic Acid, Niacinamide, Benzophenone-4, Caffeine, Polysorbate 20, Sodium Hydroxide, Benzyl Alcohol, Sodium Benzoate, Phenoxyethanol, Peg-12 Dimethicone, Citric Acid, Cocamidopropyl Betaine, Acetamide Mea, Isopropyl C12-15-Pareth-9 Carboxylate, Propylene Glycol, Tetrasodium Edta, Methyl Nicotinate, Sodium Chloride, Parfum, Polysorbate 60, Polysorbate80, Mentha Piperita Oil, Menthol, Mentha Arvensis Leaf Oil, Peg-23m, Camellia Sinensis Leaf Extract, Limonene, Cystine Bis-Pg-Propyl Silanetriol, Biotin, Lecithin, Tocopheryl Acetate, Citrus Paradisi, Peel Extract, Humulus Lupulus Flower Extract, Urtica Dioica Leaf Extract, Silica, Faex extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinum Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, Potassium Sorbate\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Nioxin System 2 leave-in treatment safe for colored hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it’s formulated to work with color-treated hair, but consult your stylist for complex chemical services.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I apply the leave-in treatment?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Apply daily to the entire scalp after cleansing and conditioning for ongoing scalp nourishment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NIOXIN","offers":[{"title":"Default Title","offer_id":58346450190723,"sku":"B005F1IP74","price":42.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/2696\/0515\/files\/nioxin-system-2-front-packaging_c24ba0b8-495a-48f4-9be1-a04709c7ecf4.jpg?v=1782633026","url":"https:\/\/origin-beauty.com\/products\/nioxin-system-2-leave-in-scalp-hair-thickening-treatment-6-7-fl-oz-niacinamide-biotin-for-thinning-natural-hair","provider":"Origin Beauty","version":"1.0","type":"link"}