This shampoo gave me shiny, smooth hair without irritating my sensitive scalp.
This shampoo made my hair shiny and smooth without causing back itch, but the medicinal smell and lack of thickening left me disappointed.
This is a review from Amazon.com about product:
Nioxin Scalp + Hair Thickening System 3 | For Colored or Damaged Hair with Light Thinning | With Niacinamide and Biotin | Trial Size | 1 Month Supply

This shampoo and conditioner leaves my hair very shiny and smooth, and (of major importance) doesn't make my back itch. But it smells like an old-fashioned hospital, and I think the thickening comes from that third little bottle, and it made where I sprayed it feel rough, and, to me, unpleasant. If anything, my hair may be thinner than before.
I won't be buying it again.
Shampoo Basics & Tips
Understanding Shiny and Smooth Hair
Shiny, smooth hair often results from formulas containing silicones (e.g., dimethicone) or natural oils. These ingredients coat the hair cuticle, reflecting light and reducing frizz. However, buildup can occur, requiring occasional clarifying washes.
Preventing Scalp Irritation
The absence of back itch suggests a sulfate-free or hypoallergenic formula. Sulfates (SLS/SLES) strip natural oils, causing dryness and itching. Alternatives like coco-glucoside gently cleanse without irritation.
Clinical Scent in Hair Products
A "hospital-like" smell may stem from preservatives like phenoxyethanol or minimal fragrance additives. Brands targeting sensitive skin often avoid synthetic perfumes, which can trigger allergies.
Thickening Claims vs. Reality
Some shampoos use proteins (e.g., keratin) or volumizing agents (e.g., panthenol) to thicken hair. However, improper use or harsh ingredients (e.g., alcohol) can dry strands, leading to breakage and thinner-appearing hair over time.
Post-Use Texture Issues
A "rough" feeling after application might indicate product residue or incompatible ingredients (e.g., certain polymers). Always rinse thoroughly and avoid mixing silicone-based products with water-insoluble formulas.
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I love how this shampoo feels and smells, with amazing lather for my fine wavy hair.
I recommend this shampoo for its great feel, pleasant scent, amazing lather, and how it prevents my fine wavy hair from becoming oily or flat.
This shampoo ended my seborrheic dermatitis flare-ups and prevents scalp build-up effectively.
This shampoo transformed my scalp by eliminating seborrheic dermatitis flare-ups with its gentle, non-build-up formula, and I now rely on autoship for consistent, reliable results every time.
I love this thick shampoo; reusing bottles makes it easy and eco-friendly.
The shampoo's thickness made pouring from the bag difficult, but my old bottle allowed for easy use and excellent results.
This shampoo cleans my curly hair and controls frizz; I love it.
I use this shampoo daily for my curls; it cleans and fights frizz perfectly. I returned after trying another brand.
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I use this eyelash cleanser daily. It cleans well, makes lashes healthier, and is safe for sensitive eyes without scent.
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