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NIOXIN DiamaxTM, with a fusion of Niacinamide, Panthenol and Caffeine, is proven to:

  • 1. Increase the diameter of each existing hair strand.
  • 2. Penetrate hair and make it fuller and more manageable.
  • 3. Strenghten hair resilience against breakage.



DiamaxTM is a leave-on treatment that can be used with the Nioxin 3-part systems for thicker, denser-looking hair.

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Customer Reviews

Review by Marsh
This item is quite expensive, but much to my surprise it really makes a big difference in how my hair looks. The claim actually matches the results. I would definitely recommend it. (Posted on 6/5/2014)
Review by Mary E. Williams
This product has worked wonders for my baby fine, brittle hair. Hair feels thicker, knots much less, and has much less breakage after using the first bottle. My hair is not only baby fine, it is brittle due to coloring, disease and medications. (Posted on 5/5/2014)
Review by ruby
My hair is feeling and looking thicker. Better price than retail. Would like instruction for use to be included. Product instructions difficult to read. (Posted on 3/29/2014)
Review by susanne e. haack
this product does everything as claimed. Makes my hair thicker with no resido. More words RIDICULAS I said it all (Posted on 3/2/2014)
Review by Tomato Girl
Am trying a combo of the 3 part system and this product and it seems to work. My hairdresser did not notice a difference, but I had only recently started using the product. The whole combo seems to bring out more curl in my wavy hair, but that lets me go an extra day without the wash and blow dry routine. (Posted on 2/4/2013)

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with step by step guide

Nioxin Diamax Thickening Xtrafusion Treatment 3.38oz

In stock

Product code: 01569
Strengthen hair resilience against breakage.

Reward points With this product, you earn 30 loyalty point(s). 30 points = $0.60.

Shipping $ Return
Please keep in mind that our shipping partners (UPS, Fedex, USPS) are closed on weekends and national holidays.Business days do not include Saturday, Sunday or national holidays. It will take little more time if we don’t have them in stock at that time.Flat Rate $6.95 order under $ offer free shipping on orders over $50 ;to continental U.S (except Alaska, Hawaii, Puerto Rico).We use Postal Priority Mail, Fedex and UPS Ground for Standard Shipping.If you are not 100% satisfied with your purchase, you can return your order to the warehouse for a full refund (Returns must be unworn, in the state you received them, and in the original packaging). We believe that in order to have the best possible online shopping experience, our customers should not have to pay for domestic return shipping.
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Size 100 mL / 3.38 Fl.Oz
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