--- product_id: 353780539 title: "Diamax Advanced, 3.38 oz" brand: "nioxin" price: "€ 165.82" currency: EUR in_stock: true reviews_count: 5 category: "Nioxin" url: https://www.desertcart.pt/products/353780539-diamax-advanced-3-38-oz store_origin: PT region: Portugal --- # Thickens hair up to 8 hours Infused with caffeine & niacinamide Strengthens hair roots Diamax Advanced, 3.38 oz **Brand:** nioxin **Price:** € 165.82 **Availability:** ✅ In Stock ## Summary > 💥 Unlock fuller, thicker hair—because your roots deserve the best! ## Quick Answers - **What is this?** Diamax Advanced, 3.38 oz by nioxin - **How much does it cost?** € 165.82 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/353780539-diamax-advanced-3-38-oz) ## 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 - • **Clean & Unscented:** Perfect for sensitive scalps, no overpowering fragrance to interfere with your style. - • **Instant Volume Boost:** Visibly thickens hair for up to 8 hours—like adding 11,000 extra strands. - • **Stronger Hair, Day After Day:** HTX technology fortifies roots to reduce breakage and promote longer growth. - • **Scientifically Powered Ingredients:** Caffeine, panthenol, and niacinamide deliver proven scalp and hair benefits. - • **Trusted by Professionals & Users Alike:** Top-rated with 4.4 stars and praised for real, noticeable results. ## Overview Nioxin Diamax Advanced is a premium 3.38 oz serum designed for thin hair, featuring HTX technology with caffeine, panthenol, and niacinamide to visibly thicken hair for up to 8 hours while protecting roots from damage and breakage. Clinically favored and unscented, it supports longer, stronger hair growth with daily use. ## Description Nioxin Diamax Advanced Treatment with HTX technology is your premium treatment for stronger, longer hair tomorrow. Visibly thickens hair (up to 8 hours) so it's like having 11,000 more hair strands. With daily use, protects existing hair roots and ends against damage and breakage allowing hair to grow longer. HTX technology includes ingredients which provide notable benefits for skin care such as caffeine, panthenol and niacinamide that deliver visibly thicker-looking hair. *vs. non-conditioning shampoo for up to 8 hours. **based on scalp with an average of 100,000 hairs, vs no treatment. Review: This works!!! Worth every penny! - My hair is thinning badly due to low iron and a 100lb glp-1 weight loss. It has been a very depressing time. My hairdresser said a lot of her clients were having luck with this - and WOW! It’s amazing. My hair feels healthier and is definitely thicker, enabling me to style it to cover the thin or bald areas. Combined with a Nutrafal regimen, I have had real growth and am finally feeling better about myself. Give it a try if you suffer with hair loss like me! Review: This works - It's a great product. I find it really works. It's unscented. My hair is thicker. I would definitely buy this again. Update...it's full of caffeine which I am allergic to. Made me very ill. Buyer beware. There should be a warning ⚠️ on the label!!! ## Features - manufacturer: Nioxin - Item Trademark: NIOXIN - Style: Diamax Advanced, 3.38 oz. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B086G3LFD1 | | ASIN | B086G3LFD1 | | Best Sellers Rank | #195,539 in Beauty ( See Top 100 in Beauty ) #1,598 in Hair Regrowth Treatments | | Brand Name | NIOXIN | | Customer Reviews | 4.4 4.4 out of 5 stars (991) | | Customer reviews | 4.4 4.4 out of 5 stars (991) | | Date First Available | 21 June 2020 | | Hair Type | Thin | | Item Form | Serum | | Item Volume | 0.34 Fluid Ounces | | Item Weight | 3.4 Ounces | | Item model number | 3614228816113 | | Liquid Volume | 3.4 Fluid Ounces | | Manufacturer | Nioxin | | Manufacturer | Nioxin | | Number of Items | 1 | | Product Benefits | With ingredients like caffeine & niacinamide, Diamax thickens the hair at the roots and protects against breakage. | | Product Dimensions | 5.72 x 5.99 x 17.5 cm; 96.39 g | | Scent Name | Unscented | | Unit Count | 3.38 Ounce | ## Product Details - **Hair type:** Thin - **Item form:** Serum - **Liquid volume:** 3.4 Fluid Ounces - **Scent:** Unscented ## Images ![Diamax Advanced, 3.38 oz - Image 1](https://m.media-amazon.com/images/I/61A8UgXX8bL.jpg) ## Questions & Answers **Q: Does the nioxin diamax get combed thru the hair or just applied at scalp?** A: I am happy to answer this for you today. The following is manufacture instructions for best results: Apply evenly throughout the scalp. Massage gently at the roots and comb through. Do not rinse off. For exceptional results use daily on wet or dry hair. I hope this answered your question today. Have a Wonderful Nioxin Hair Day! **Q: Can this be used with the hair thickrning spray?** A: Thank you for contacting Nioxin Professional. We value your loyalty to our brand. Yes, Nioxin's Thickening Spray can be used with Diamax. Diamax should be focused at the root whereas the thickening spray should be used mid length to ends. **Q: Is this sulfite free?** A: Thank you for contacting Nioxin. We value your brand loyalty. Nioxin Diamaz Hair Thickening Treatment is sulfate free. **Q: Would this also be considered a heat protectant?** A: I use this product when I wash my hair...it is great strengthening serum...love it...Highly recommended by my hairdresser...however, to be safe I still use a heat protectant ## Customer Reviews ### ⭐⭐⭐⭐⭐ This works!!! Worth every penny! *by A***R on 7 January 2026* My hair is thinning badly due to low iron and a 100lb glp-1 weight loss. It has been a very depressing time. My hairdresser said a lot of her clients were having luck with this - and WOW! It’s amazing. My hair feels healthier and is definitely thicker, enabling me to style it to cover the thin or bald areas. Combined with a Nutrafal regimen, I have had real growth and am finally feeling better about myself. Give it a try if you suffer with hair loss like me! ### ⭐⭐⭐⭐⭐ This works *by B***. on 1 December 2024* It's a great product. I find it really works. It's unscented. My hair is thicker. I would definitely buy this again. Update...it's full of caffeine which I am allergic to. Made me very ill. Buyer beware. There should be a warning ⚠️ on the label!!! ### ⭐⭐⭐⭐⭐ Works great *by P***K on 6 May 2024* I bought it for my postpartum hair loss. My hair were falling out like crazy but after using this product it stopped and I actually have lots of baby hair. I thought the product will be oily but it is more like just a liquid and it doesnt leave hair greesy. ## Frequently Bought Together - Nioxin Density Defend Diamax Advanced Hair Thickening Serum With Caffeine, Niacinamide & Panthenol For Thicker, Fuller-Looking Hair 3.38 Fl oz - Nioxin Night Density Rescue Serum | Overnight Hair Thickening Serum | Protects Against Hair Breakage | Intensive Treatment with Oxydine | 2.4 Fl oz. - Nioxin Hair Booster Serum | Advanced Leave-In Hair Treatment| Strengthens and Conditions | 3.4 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.pt/products/353780539-diamax-advanced-3-38-oz](https://www.desertcart.pt/products/353780539-diamax-advanced-3-38-oz) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-07-12*