NIOXIN System 2 Scalp + Hair Thickening Conditioner, 33.8 fl oz — Niacinamide & Biotin for Fuller-Looking Natural Hair

NIOXIN System 2 Scalp + Hair Thickening Conditioner is a lightweight, professional conditioner formulated to strengthen natural or untreated hair with progressed thinning while balancing scalp moisture.

This conditioner is the second step in NIOXIN’s three-part system designed for natural hair that shows signs of thinning. It combines BioAMP technology with niacinamide and biotin to improve hair resilience, reduce breakage, and create the appearance of fuller-looking hair. The 33.8 fl oz size is ideal for regular use at home or in-salon settings and pairs with the System 2 Cleanser Shampoo and Scalp & Hair Treatment for best results.

How does this conditioner help hair that’s already thinning?

NIOXIN System 2 conditioner focuses on strengthening hair fibers and protecting them from environmental and styling damage. By improving strand resilience and sealing moisture into the cuticle, it reduces breakage and supports a thicker appearance over time.

• BioAMP technology to amplify hair structure for fuller visual density
• Biotin and niacinamide to support stronger strands
• Lightweight hydration that won’t weigh hair down
• Clinical backing showing visible results in weeks when used consistently

What makes this formula suitable for natural or untreated hair?

The formulation avoids heavy silicones and occlusive agents that can flatten untreated textures, instead delivering balanced moisture and fortifying actives. It’s tuned to protect porous, untreated strands while maintaining natural movement and body.

• Non-greasy conditioning agents preserve natural texture
• Nourishing botanicals and antioxidants for scalp care
• UV-protecting ingredients to shield hair from light damage
• Designed specifically for hair with progressed thinning patterns

How should I use NIOXIN System 2 Conditioner for best results?

Use the conditioner as the second step after shampooing with the NIOXIN System 2 Cleanser. Apply to the scalp and hair, leave it on for 1–3 minutes, then rinse thoroughly; daily use is recommended to support ongoing scalp health and fuller-looking hair.

• Apply after cleansing while hair is wet for even distribution
• Massage into scalp to support circulation and penetration
• Leave 1–3 minutes, then rinse to avoid product buildup
• Combine with the System 2 regimen for optimal scalp environment

Will this conditioner cause buildup or weigh my hair down?

No — the System 2 conditioner is formulated to be lightweight and rinse-clean, minimizing residue that can clog follicles or flatten thin hair. Regular use with the matching cleanser helps keep the scalp free of excess oils and impurities.

• Light formulation reduces risk of limp hair
• Works with System 2 shampoo to remove sebum and debris
• Rinse-clean texture prevents long-term buildup when used properly
• Recommended in a routine for progressive improvement in fullness appearance

Who is this for: NIOXIN System 2 Scalp + Hair Thickening Conditioner is designed for people with natural or untreated hair experiencing progressed thinning who want a salon-grade, lightweight conditioner that supports scalp health and fuller-looking hair. It’s suitable for daily use and for those who prefer clinically oriented haircare backed by decades of thinning-hair research.

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