--- product_id: 253773579 title: "Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary)" brand: "nioxin" price: "$44.08" currency: USD in_stock: true reviews_count: 5 category: "Nioxin" url: https://www.desertcart.us/products/253773579-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged store_origin: US region: United States of America --- # Visible results in 30 days Nourishing botanicals & antioxidants 85% thicker hair Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary) **Brand:** nioxin **Price:** $44.08 **Availability:** ✅ In Stock ## Summary > 🌟 Unlock your hair’s full potential—thicker, fuller, unstoppable. ## Quick Answers - **What is this?** Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary) by nioxin - **How much does it cost?** $44.08 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/253773579-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 - • **Fast-Acting Formula:** See fuller, denser hair in just 30 days—because waiting is so last season. - • **Advanced Scalp Detox:** Gentle cleansing removes buildup to create the perfect scalp environment for growth. - • **Botanical Powerhouse:** Infused with caffeine, biotin, niacinamide, and peppermint oil for scalp vitality and refreshment. - • **Color-Safe Strengthening:** Protects and strengthens color-treated hair while reducing breakage and thinning. - • **Clinically Proven Thickness Boost:** 85% of users report visibly thicker hair—don’t get left behind in the hair game. ## Overview Nioxin System 4 Scalp + Hair Thickening Treatment is a clinically designed leave-in serum targeting dry, damaged, color-treated hair with progressed thinning. Featuring a potent blend of caffeine, biotin, niacinamide, and peppermint oil, it detoxifies the scalp, strengthens hair resilience, and delivers visible thickening results in 30 days, making it a top choice for professionals seeking fuller, healthier hair. ## 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 treatment Scalp Access Delivery System 2.0 technology helps prevent hair loss due to breakage, providing a refreshed scalp environment. Nioxin’s Scalp and Hair Treatment is the final step of a three part System, designed to strengthen the hair and amplify hair structure. Review: Excellent Service - Excellent product,I have been using this for the past 3 years,and it has helped my hair stay strong and shiny. Review: A mousse by any other name - 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 desertcart 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. ## Features - 85% of consumers noticed a thickening effect, 80% noticed an increase in hair density, 80% noticed an increase in hair fullness - Thickens the hair: Nioxin System Kit 4 is clinically designed to add thickness and fullness to dry, damaged, color-treated hair with progressed thinning, with visible results in just 30 days. - Supports scalp health: The advanced formula of Nioxin System Kit 4 gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp. - Reduces hair thinning: By strengthening hair resilience, Nioxin System Kit 2 helps minimize hair breakage, promoting the appearance of fuller, thicker hair while protecting the hair color. - Nourishes the scalp: Infused with nourishing botanicals, antioxidants, and UV protecting ingredients, this kit's Scalp + Hair Thickening Treatment can nourish and revitalize the scalp, improving its overall health and condition. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005F1IMFO | | Best Sellers Rank | #48,007 in Beauty ( See Top 100 in Beauty ) #131 in Scalp Treatments | | Brand | NIOXIN | | Brand Name | NIOXIN | | Customer Reviews | 4.5 out of 5 stars 2,629 Reviews | | Item Form | Liquid | | Item Volume | 3.4 Fluid Ounces | | Item Weight | 0.21 Pounds | | Item form | Liquid | | Item weight | 0.21 Pounds | | Manufacturer | Nioxin | | Manufacturer Part Number | 81629319 | | Model Number | 81629319 | | Product Benefits | Strengthens thin and weakened hair | | Product benefits | Strengthens thin and weakened hair | | Scent | Peppermint Oil | | Scent Name | Peppermint Oil | | Set Name | NIOXIN 4 Leave-In Scalp and Hair Treatment System | | Size | 100.6 ml (Pack of 1) | | Skin Type | Dry | | Skin type | Dry | | Special Ingredients | Caffeine, Niacinamide, Biotin, Cystine Bis-PG-Propyl Silanetriol, Peppermint Oil | | Target Use Body Part | Head | | Unit Count | 100 Milliliters | ## Product Details - **Brand:** NIOXIN - **Item form:** Liquid - **Product benefits:** Strengthens thin and weakened hair - **Scent:** Peppermint Oil - **Skin type:** Dry ## Images ![Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/61Qe2jDK1jL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How do i know this is the real product? when i google the company it looks like its an indonesian company. how do i know it's authentic?** A: My bottle of Nioxin Cleanser (shampoo) says it is a product of the Wella Corporation in Woodland Hills, California. There is an 800 # for questions: 800-935-5273. **Q: Is this product also a detangler?** A: This is a really good question I will be happy to answer for you today. This is our Nioxin Scalp and Hair Treatment after shampoo and Conditioner you towel then apply 2-3 pumps on your finger tips and masaage into your scalp leave let dry 1 minute and then you would be able to apply any products you normally would including a detangler. This is not a detangler as it is to promote healthy hair growth and stimulates the scalp. I hope this answered your question today. Have a Fabulous Hair Day! **Q: Does this have Saw Palmetto?** A: It is not listed as such on the label. They have 800-935-5273 US 800-267-1962 Canada for questions. **Q: Does it contain minoxidil** A: Thank you for contacting Nioxin. We value your brand loyalty. Nioxin System 4 Scalp & Hair Leave-in Treatment does not contain minoxidil. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent Service *by T***N on 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 S***T on 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 M***Z on 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 Night Density Rescue Serum | Overnight Hair Thickening Serum | Protects Against Hair Breakage | Intensive Treatment with Oxydine | 2.4 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/253773579-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged](https://www.desertcart.us/products/253773579-nioxin-system-4-scalp-hair-thickening-treatment-serum-for-damaged) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-12*