NIOXIN Scalp + Hair Thickening System 2 Conditioner for Natural/Untreated Hair — 16.9 fl oz, Niacinamide & Biotin for Lightweight

Nioxin System 2 Scalp Therapy Conditioner is a lightweight, salon-grade formula that strengthens and moisturizes natural or untreated hair with progressed thinning to improve manageability and the appearance of fullness.

This conditioner is the second step in Nioxin’s three-part professional regimen designed specifically for natural hair showing signs of thinning. Built around BioAMP technology and enriched with niacinamide and biotin, the formula helps reinforce hair resilience while maintaining moisture balance without weighing hair down. Use it after the System 2 Cleanser to detangle, soften, and support a healthier scalp environment for everyday styling.

How does this conditioner help hair that’s showing progressed thinning?

The formula focuses on strengthening the hair shaft and reducing breakage, which makes strands appear thicker and fuller over time. It works with Nioxin’s system approach—cleanse, condition, and treat—to support a cleaner scalp and optimized hair structure.

• BioAMP technology to amplify hair structure and add resilience
• Niacinamide and biotin to nourish and support hair strength
• Lightweight hydration that avoids weighing down fine or thinning strands
• Formulated for natural or untreated hair with progressed thinning

When and how should I use this conditioner for best results?

Apply after shampooing with Nioxin System 2 Cleanser; distribute through the scalp and lengths, leave on for 1–3 minutes, then rinse. For consistent benefits, use daily as part of the three-step System 2 regimen and pair with Nioxin Scalp & Hair Treatment when instructed.

• Use daily following the System 2 Cleanser
• Massage into scalp and hair, leave 1–3 minutes, rinse thoroughly
• Follow with System 3-part routine for cumulative results
• Available in 16.9 fl oz size for regular use

Will this conditioner make my hair look fuller right away?

You can expect improved manageability and a fuller appearance as the conditioner detangles and amplifies strand structure, but visible density changes are cumulative with continued use. Many users report noticeable improvements in fullness and texture within weeks when using the full System 2 program consistently.

• Immediate benefits: smoother, easier-to-style hair and reduced tangles
• Short-term benefits: amplified hair structure and improved strand resilience
• Longer-term: progressive improvement in the appearance of thickness with regular system use

What ingredients support scalp health without weighing hair down?

The conditioner blends moisture-balancing agents with scalp-supporting actives to maintain a healthy scalp environment while keeping lightweight hydration. Botanical extracts, antioxidants, and UV-protecting components are included to protect and nourish both scalp and hair fiber without heavy residues.

• Niacinamide helps support scalp function and surface conditioning
• Biotin contributes to hair resilience and strength
• Botanical extracts and antioxidants to nourish and protect
• Formulated to rinse clean and avoid build-up on follicles

Who is this for: Nioxin System 2 Scalp Therapy Conditioner is intended for people with natural or untreated hair experiencing progressed thinning who want a professional-strength, lightweight conditioner that supports scalp health and bolsters hair structure. It suits daily users, those following a targeted thinning-hair regimen, and anyone seeking salon-quality moisture without added weight.

Ingredients

Aqua, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Stearyl Alcohol, Quaternium-18, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Guar, Glyceryl Stearate, Hydroxyethylcellulose, Oleyl Alcohol, Methylparaben, Propylparaben, Polysorbate 60,Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Bis-Aminopropyl Dimethicone, EDTA, Propylene Glycol, Citric Acid, 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, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, CI 42090, Potassium Sorbate, Sodium Benzoate