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  • Shipping Weight: 5 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • UPC: 070018053497
  • Item model number: System 4


Nioxin System 4- Liter Duo

User reviews

Very nice feeling on my scalp. It feels refreshing and cooling. The smell is a nice minty scent. And it feels like it's working its magic already on day one of use. I feel like when I brushed my hair it was very easy and my hair wasn't coming off as much as usual. I know it's only the first day but I feel something happening already. It can also just be the minty feeling... It kind of feels like he's and shoulders but more of a calm cool effect also. No itching and very nice. Hope this makes sense and helps anyone. I'd highly recommend it. I will post again after a month or so.
I didn't realize when ordering just how TINGLY the conditioner was. Holy hannah! It's pretty intense. But I guess I'm growing to like it. The conditioner doesn't condition my hair very well though. So I have to use a different shampoo on my ends & the Nioxin on my scalp. It smells nice though. It's definitely growing on me.
I've been using Nioxin for about 6 months now and it does what it says it does. It leaves my hair fuller and I lose less when I wash it. I will continue to use it even though it is quite a bit more expensive than other shampoos and conditioners found on the store shelves. A two liter bottle should last me quite a while.
Best place to buy this product. I am always telling others who suffer from hair loss (especially those with autoimmune disorders like me). I went from having very thin, straight hair to full/wavy hair (I grew up with fine, straight-as-a-stick hair, too).
As far as the product itself goes, I feel like I've found a miracle shampoo. After a surgery in October 2015, I was losing a lot of hair and I looked into this on the recommendation of a friend. My hair is growing back really quickly--lots of hair. As far as the shipping is concerned, I was a little disappointed because my big bottle of shampoo had a 1" long crack at the bottom and it had leaked into the packaging. I dodn't have a big bottle to transfer it to so I've just been laying the bottle on its side, which is a little inconvenient.
This stuff actually works. It re-stabilizes your ph scalp balance. Also be careful with body hair growth. This stuff makes even your leg hair grow. I now wash my head seperatly then jump in the shower 😐. But it works.. takes 2 months to see new growth!!!
I just switched from the #3 product because my hair continues to thin. Haven't really had it long enough to tell if the thickening on the #4 is greater than the #3. The cleanser works well (doesn't strip all the oil from your hair, especially if you don't over-rinse - the "squeaky-clean" sound means you have taken too much of the natural oil out of your hair - unless your hair tends to be oily anyway). The conditioner works well on my hair but stings my eyes if any gets into them.

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