System 4 | Scalp Care | Thickening Shampoo | Colored Damaged Hair | Scalp Health |For Colored, Dry, & Damaged Hair with Progressed Thinning | Maintain Vibrant Color | Cleanse & Boost Hair

Great shampoo. It tingles and feels terrific. Bi feel like it is helping thoroughly clean my scalp and helps reduce overall loss of hair.

My friend’s oncology nurse recommended this shampoo to her after she finished chemo sbd her hair started growing back. (She’s in remission, yay!) Anyway I was staying with my friend on a visit sbd used some and liked it. I bought a bottle of my own, and it’s been great for my hair. I live in the desert SW and the climate here makes by fine hair so dry and brittle - but this shampoo really helps keep my hair soft and fuller looking

It performs its function as a cleansing and detoxifying shampoo very well; furthermore—and most importantly—it curbs hair loss. The price and quantity are perfectly balanced.

Appears to dry hair, but cleanses well. Not much fragrance

I’ve been using Nioxin System 4 for a few months and I’m really impressed. My color-treated hair is usually dry and fragile, but this shampoo has helped it feel thicker and fuller without weighing it down. I’ve noticed less breakage and shedding, and my scalp feels much cleaner and healthier. It lathers well, rinses clean, and doesn’t strip my color. My hair looks denser and has more body, especially at the roots. If you have dry, damaged, or thinning color-treated hair, this is definitely worth trying.

I’ve been using the Nioxin System 4 Conditioner (paired with the matching shampoo) for a few weeks now, and the difference is impressive. My hair is color‑treated and has been thinning for a while—this lightly moisturizing formula feels gentle yet powerful. It leaves my hair feeling soft and manageable, without any heaviness or greasiness. The texture is lightweight, yet hydrating—from scalp to ends. It’s formulated with peppermint and wild mint oils that invigorate the scalp, while caffeine, niacinamide, and biotin help strengthen hair at the root and promote a healthier scalp environment. Since using it regularly, I've noticed less shed during brushing and shower drain buildup, which used to clog weekly—now it's only occasional. My hair feels thicker and fuller overall, although I didn’t expect a dramatic regrowth—more like restoration. It helped stop the progression of hair loss; not necessarily added growth.

My spouse has a bald spot. it appears this helped. I watched as tiny thin hairs filled up the silky shiny spot and lite regrowth happened. I watched daily as thin sprouts became longer thin sprouts. If you ever had a part in your hair and followed it to point where it would end at back of scalp top...that's the spot I'm talking about. Rogaine does one area. Other products do other areas. This one got the spot in-between I hadn't seen advertised. don't know if it works for your head, but maybe they have the something that cleans those pores enough to allow sprouts to appear. Hair loss is hard on people, but it was lite weight and cleaning and seemed good quality. I have thinning hair but haven't tried it yet as a woman as didn't want to take his shampoo from him. I have no stories from woman point a view. Only from view above...looking at my man's bald spot and watching him feel more excited at new growth. Which is what we want in a great product.

This is helping me so much. My hair feel thicke and fuller. Love it

Es una botella más grande que la que viene en el kit lo cual me sorprendió porque pensé que sería algo similar. Llevo meses usando el producto y mi cabello dura más tiempo limpio. El cuerpo cabelludo se siente bien lavado y no grasoso.

This shampoo system has helped my hair from thinning excessively.

C est un super produit j en suis ravie et moins cher que chez mon coiffeur je le recommande pour donner du volume

A good product I have been using for 4 years since being seriously ill. It has helped my hair recover and it's much thicker than it was. And shiny!