NIOXIN Scalp + Hair Thickening System 2 Shampoo — 16.9 fl oz for Natural/Untreated Hair with Niacinamide & Biotin

Nioxin Scalp + Hair Thickening System 2 Shampoo is a professional-strength cleanser formulated to gently remove buildup and help hair look thicker and fuller on natural, untreated hair with progressed thinning.

Designed as the first step in Nioxin's three-part regimen, this 16.9 fl oz Derma-Purifying Shampoo uses targeted cleansing technology to lift sebum, environmental residue and follicle-clogging oils from the scalp and strands. It prepares hair for conditioner and leave-in treatments, strengthens the hair shaft, and supports a cleaner scalp environment that can make styling look more voluminous. Clinically and dermatologically tested, System 2 is tailored for natural hair showing advanced thinning patterns and pairs best with the matching Scalp Therapy Conditioner and Scalp & Hair Treatment.

How does this shampoo help hair appear thicker?

The formula concentrates on clearing scalp and hair-surface buildup so each strand can sit with improved lift and separation. Reduced residue means hair lays less flat and appears fuller from root to tip.

• Activ-Renewal tech helps remove sebum and fatty acids that weigh hair down.
• Strengthening agents support hair structure to help minimize breakage.
• Regular use in the three-part system improves overall hair density appearance.

What should I expect when I use the shampoo daily?

Expect a gentle, clarifying cleanse that foams to remove oils and environmental particles while maintaining scalp comfort. With consistent daily use, many users notice improved fullness and manageability within weeks, especially when followed by the System 2 conditioner and treatment.

• Apply to wet hair, massage into the scalp for about one minute, then rinse thoroughly.
• Use every day as the first step of the Nioxin three-part routine for best results.
• Complement with Scalp Therapy Conditioner and Scalp & Hair Treatment for amplified effects.

Is this product suitable for my hair type and thinning level?

System 2 is specifically formulated for natural, untreated hair experiencing progressed thinning. It is not a color-protect formula; instead it targets scalps and hair that need intensive cleansing and structural support.

• Best for natural textures without chemical processing or relaxers.
• Targets advanced thinning rather than fine or early-stage density loss.
• Dermatologically tested to be appropriate for sensitive scalp use when directions are followed.

Which ingredients and benefits are important to know?

The blend includes ingredients known to clarify and support the hair surface without harsh stripping. Niacinamide and biotin are included to support scalp and strand resilience while antioxidants and UV-protecting components help maintain hair condition from environmental stressors.

• Niacinamide helps support scalp conditioning and overall scalp comfort.
• Biotin supports hair strength and reduces the appearance of breakage.
• Antioxidants and UV protectors help shield hair from everyday environmental damage.

Who is this for: Nioxin System 2 Shampoo is aimed at people with natural, untreated hair who are experiencing progressed thinning and want a professional-grade, daily cleanser that prepares the scalp and strands for a complete thickening regimen. If you're following a multi-step hair-density routine or seeking a salon-backed clarifying shampoo to lift buildup and support fuller-looking hair, this product is formulated with that purpose in mind.

Ingredients

Aqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Cocamidopropyl Betaine, Sodium Citrate, Sodium Xylenesulfonate, Sodium Chloride, Cocamide MEA, Sodium Benzoate, Citric Acid, Salicylic Acid, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Tetrasodium EDTA, Sodium Hydroxide, Methylparaben, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Citrus Paradisi Peel Extract, Humulus Lupulus Flower Extract, Urtica Dioica Leaf Extract, CI 19140, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, CI 42090, Citrus Aurantium Dulcis Fruit Extract, CI 17200, Potassium Sorbate