Nioxin System 4 Scalp + Hair Conditioner for Color-Treated, Damaged Hair — Lightweight Niacinamide & Biotin (10 fl oz)

Nioxin System 4 Scalp + Hair Conditioner is a lightweight, density‑protecting conditioner formulated to strengthen colored, damaged hair with progressed thinning and support a healthier scalp environment.

This professional conditioner is the second step in Nioxin’s three‑part regimen, formulated with BioAMP technology plus niacinamide and biotin to help retain moisture balance and improve hair resilience. Designed for color‑treated, weakened strands that show signs of thinning, the formula aims to leave hair looking fuller and feeling more manageable without weighing it down.

How does this conditioner help colored, damaged hair with progressed thinning?

The System 4 conditioner focuses on restoring moisture balance while reinforcing hair structure, helping minimize breakage that makes thinning more noticeable. It works together with Nioxin Cleanser and Treatment to create a comprehensive scalp and hair routine that targets density and texture.

• BioAMP technology strengthens and amplifies hair structure for fuller appearance
• Niacinamide supports scalp circulation and surface health
• Biotin contributes to hair resilience and improves manageability
• Lightweight moisturizing agents condition without flattening color‑treated strands

What results can I expect and how quickly?

Many users notice improved thickness, density, and fullness in weeks when the full regimen is used consistently. Visible improvements depend on starting condition and adherence to the three‑step program (Cleanser, Conditioner, and Scalp & Hair Treatment).

• Clinically observed improvements in fullness and density with regular use
• Designed to reduce breakage and preserve color vibrancy
• Best results seen when used daily as part of the System 4 kit

How should I use the Nioxin System 4 Conditioner for best effect?

Apply after shampooing with the Nioxin System 4 Cleanser: distribute through scalp and hair, leave on for 1–3 minutes, then rinse thoroughly. Follow with the System 4 Scalp & Hair Treatment to complete the regimen and maintain results over time.

• Use daily or as directed by a hair professional
• Work into scalp and strands for targeted conditioning and resilience
• Rinse well to avoid product buildup that can weigh hair down

Will this conditioner affect my hair color or styling routine?

The formula is made for color‑treated hair and aims to protect tone while improving texture and fullness. Because it’s lightweight, it should integrate easily into existing styling habits without adding heavy residue.

• Safe for color‑treated hair when used as directed
• Adds moisture without flattening or greasing the hair
• Complements styling products and professional color care

Who is this for: Nioxin System 4 Scalp + Hair Conditioner is intended for people with color‑treated, dry or damaged hair showing progressed thinning who want a salon‑grade, lightweight conditioner that targets scalp health and strengthens fragile strands. It’s a fit for those committed to a three‑step regimen and seeking fuller‑looking hair without heavy conditioning agents.

Ingredients

Aqua, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Stearyl Alcohol, Quaternium-18, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Guar, Bis-Aminopropyl Dimethicone, Glyceryl Stearate, Oleyl Alcohol, Methylparaben, Propylparaben, Polysorbate 60, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, EDTA, Hydroxyethylcellulose, Citric Acid, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare Fruit 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