NIOXIN Scalp + Hair Thickening System 4 for Color‑Treated, Damaged Hair — 3‑Month Kit with Niacinamide & Biotin

Nioxin Scalp + Hair Thickening System 4 is a three-step professional kit that helps dry, color‑treated hair with progressed thinning look thicker, stronger, and more resilient while protecting color.

Designed specifically for colored and damaged hair showing progressed thinning, this full-size, three‑month supply from Nioxin uses a scalp‑first approach to improve the appearance of density and reduce breakage from styling and environmental stress. The regimen combines a cleansing shampoo to remove sebum and residues, a lightweight conditioner to restore moisture balance without weighing hair down, and an alcohol‑free leave‑in scalp and hair treatment that refreshes and adds visible volume.

How does System 4 help hair that’s been color‑treated and damaged?

System 4 targets the scalp and hair shaft to create a healthier base for thicker‑looking hair while preserving color. Formulated to remove follicle‑clogging impurities and condition fragile strands, the kit supports resilience and shine without stripping dye.

• Cleanser shampoo lifts sebum and environmental buildup that can flatten hair.
• Lightweight conditioner controls moisture so colored hair doesn’t become limp or heavy.
• Leave‑in scalp treatment increases visible volume and leaves hair more manageable.
• Includes niacinamide and biotin precursors to support hair strength and scalp appearance.

What results can I expect and how soon will I notice them?

Users often see denser, fuller appearance and reduced breakage within weeks of consistent use; many report visible improvement in about 30 days. Results depend on hair condition and adherence to the three‑step routine.

• Daily or regular use improves scalp clarity and helps support thicker appearance.
• Reduced hair loss due to breakage through strengthened strands and refreshed scalp.
• Visible fullness gains reported by the majority of users in consumer studies.
• Best outcome when paired with other Nioxin Intensive Care products if desired.

How do I use each step in the three‑month System 4 kit?

The regimen is straightforward: cleanse, condition, and treat. Follow the step sequence each time you wash for optimal scalp environment and sustained volume.

• Step 1: Massage the Cleanser Shampoo into wet scalp and hair, then rinse thoroughly to remove residues.
• Step 2: Apply the Scalp Therapy Conditioner from roots to ends, leave briefly, then rinse to balance moisture without weighing hair down.
• Step 3: Shake the Scalp & Hair Treatment and apply to the scalp; do not rinse to allow the formula to refresh and add volume.
• Follow recommended frequency for continued benefits and consider Subscribe & Save to maintain supply.

Is System 4 safe for color and how does it protect dyed hair?

System 4 is formulated for color‑treated hair, focusing on gentle cleansing and moisture control to avoid stripping dye. UV protective ingredients and antioxidants help preserve shine and minimize fading while improving hair resiliency.

• Non‑stripping cleanser maintains color integrity while removing buildup.
• Conditioner restores balance so colored hair remains soft with lift.
• Leave‑in treatment adds volume without interfering with hair color.
• Clinically and dermatologically tested as part of the Nioxin professional line.

Who is this for: Nioxin System 4 is ideal for people with color‑treated, dry or damaged hair experiencing progressed thinning who want a salon‑grade, three‑step regimen to improve the look of density and reduce breakage. It suits anyone seeking a scalp‑focused routine that supports fuller appearance while maintaining color vibrancy and manageability.

Ingredients

NIOXIN® SHAMPOO: Aqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Citric Acid, Sodium Chloride, PPG-2 Hydroxyethyl Coco/Isostearamide, Sodium Citrate, Sodium Xylenesulfonate, Sodium Benzoate, Salicylic Acid, Sodium Hydroxide, Tetrasodium EDTA, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Trisodium Ethylenediamine Disuccinate, Methylparaben, Polyquaternium-10, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Sodium Acetate, Isopropyl Alcohol, 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 CONDITIONER: 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 TREATMENT: Aqua, Phenylbenzimidazole Sulfonic Acid, Niacinamide, Benzophenone-4, Caffeine, Polysorbate 20, Sodium Hydroxide, Benzyl Alcohol, Sodium Benzoate, Phenoxyethanol, PEG-12 Dimethicone, Citric Acid, Cocamidopropyl Betaine, Acetamide MEA, Isopropyl C12-15-Pareth-9 Carboxylate, Tetrasodium EDTA, Propylene Glycol, Methyl Nicotinate, Sodium Chloride, Parfum, Polysorbate 60, Polysorbate 80, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, PEG-23M, Camellia Sinensis Leaf Extract, Limonene, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Silica, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, Potassium Sorbate