--- product_id: 279682149 title: "Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary)" brand: "nioxin" price: "$81.09" currency: USD in_stock: true reviews_count: 5 url: https://www.desertcart.us/products/279682149-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged store_origin: US region: United States of America --- # Leave-in hydration boost Scalp Access Delivery System 2.0 UV protection shield Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) **Brand:** nioxin **Price:** $81.09 **Availability:** ✅ In Stock ## Summary > 💥 Unlock thicker, stronger hair with every drop! ## Quick Answers - **What is this?** Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) by nioxin - **How much does it cost?** $81.09 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/279682149-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged) ## Best For - nioxin enthusiasts ## Why This Product - Trusted nioxin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Breakage Defense:** Helps prevent hair loss caused by breakage, keeping your strands resilient and full. - • **Advanced Scalp Care:** Scalp Access Delivery System 2.0 refreshes and protects your scalp environment for optimal hair growth. - • **Award-Winning Trust:** 16 years running as the Behind the Chair Stylist Choice Favorite for thinning haircare. - • **Strengthen & Amplify:** Professional-grade formula that thickens hair diameter and reinforces hair structure. - • **Color-Safe Protection:** Specifically designed for colored hair with progressed thinning to maintain vibrancy and health. ## Overview Nioxin System 4 Scalp + Hair Thickening Treatment is a professional leave-in serum designed for colored hair experiencing progressed thinning. Featuring the advanced Scalp Access Delivery System 2.0 and UV protection, it strengthens hair, prevents breakage, and refreshes the scalp to promote thicker, healthier hair. Trusted by stylists for over 16 years, this 6.8 oz treatment is the final step in a three-part regimen to amplify hair structure and combat thinning. ## Description PROTECT and REFRESH the scalp with NIOXIN’s three part System 4 Scalp & Hair Treatment for Colored Hair with Progressed Thinning. This diameter-increasing leave-in hair and scalp treatment is particularly formulated for colored hair with progressed thinning. NIOXIN’s Scalp and Hair Treatment is the final step of a three part System, designed to strengthen the hair and amplify hair structure. PROFESSIONAL HAIR AND SCALP THICKENING TREATMENT for Colored Hair with progressed thinning Helps prevent hair loss due to breakage, providing a refreshed scalp environment Professional quality treatment to increase hair diameter for colored hair with progressed thinning Scalp Access Delivery System 2.0 helps to provides thicker hair and contains UV-protection ingredients for the hair Award: Behind the Chair Stylist Choice Winner Favorite Thinning Haircare, 16 consecutive years NIOXIN’s Scalp and Hair Leave-in Treatment is the third step of a three part NIOXIN regimen, designed to strengthen the hair and amplify hair structure Use in combination with NIOXIN System 4 Cleanser Shampoo and Scalp Therapy Conditioner Enroll in Subscribe and Save to ensure you never run out! ## Features - Product Type:Luxury Beauty - Item Package Dimension:2.31 " L X1.85 " W X7.5 "h - Item Package Weight:6.76 lbs - Country Of Origin: Mexico ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0054Y0PMK | | Best Sellers Rank | #122 in Scalp Treatments | | Date First Available | 8 August 2012 | | Department | Women's Hair Care | | Is Discontinued By Manufacturer | No | | Item Model Number | 81629325 | | Manufacturer | Nioxin | | Product Dimensions | 5.87 x 4.7 x 19.05 cm; 193 g | ## Product Details - **Brand:** NIOXIN - **Item form:** Serum - **Product benefits:** Hair thickness and scalp health - **Scent:** Unscented - **Skin type:** Normal ## Images ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/61rtLuCDPQL.jpg) ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) - Image 2](https://m.media-amazon.com/images/I/91VOpL6gRlL.jpg) ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) - Image 3](https://m.media-amazon.com/images/I/81hde-Sj0CL.jpg) ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) - Image 4](https://m.media-amazon.com/images/I/81ehE++F1PL.jpg) ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 6.8 oz (Packaging May Vary) - Image 5](https://m.media-amazon.com/images/I/81vZt3WDi4L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the expiration date of this product being sold by Gold Fulfillment?** A: I looked it up in frequently asked questions in the Nixon site. The product has a 36 month shelf life. And it is effective for 12 months once opened **Q: What does200 MI mean?** A: It's 200 ML (milliliters) which is equal to 6.76 FL (fluid ounces) the amount in the bottle **Q: Can you use this with hair booster Nixon treatment also? If so, which first? Or does it matter?** A: I answered wrong the first time. I shake the bottle and then it foams, and I mix it over my scalp. No more hair loss! Yes, I use it first after showering. **Q: Does this nioxin system 4 treatment have an spf in it?** A: Hello, the packaging says it has a UV defense for your hair, but no mention of an spf for your scalp. I am very fair, have very thin baby hair, and live in a high altitude. I haven't had much of a problem and I have used it for about 5 years. I hope this helps. Regards, Ellen ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent Service *by on Reviewed in Australia 16 October 2018* Excellent product,I have been using this for the past 3 years,and it has helped my hair stay strong and shiny. ### ⭐⭐ A mousse by any other name *by on Reviewed in India 9 November 2025* This product is overpriced. In Australia for the same price you receive a set consisting of 150ml shampoo and 150ml conditioner plus 40ml of the hair thickener which is actually a mousse. The advertising on the Amazon site actually shows these 3 products in one image on the LHS of the main image. This image should not be there as it is misleading. So what do I now have? An overpriced mousse which you can pick up anywhere at a fraction of the cost. ### ⭐⭐⭐⭐⭐ Excelente!! *by on Reviewed in Mexico 30 October 2023* Si hace el efecto que menciona, buena compra ## Frequently Bought Together - Nioxin System 4 Scalp Care + Hair Thickening Leave-In Treatment For Colored, Dry, & Damaged Hair with Progressed Thinning Nourish & Boost Hair Density with Niacinamide & Biotin - Nioxin Density Defend Styling Root Lifting Spray | Hair Thickening Spray | Texturizes and Volumizes | 5.1 Fl oz. - Nioxin Hair Fall Defense Intensive Daily Leave-In Hair Treatment | With Niacinamide, Caffeine, Lauric Acid, and Sandalore | For Thicker, Stronger Hair | 2.3 Fl Oz. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/279682149-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged](https://www.desertcart.us/products/279682149-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-28*