NIOXIN System Kit 4 Scalp & Hair Thickening Kit — Color‑Treated & Damaged, 3‑Step Regimen

Nioxin System Kit 4 is a three-step salon-grade regimen that cleanses, conditions and treats dry, damaged, color-treated hair to visibly improve thickness and reduce breakage from progressed thinning.

This kit pairs a clarifying cleanser, a lightweight conditioner and a leave-in scalp treatment formulated to remove follicle-clogging residues, protect color and boost hair resilience. Designed around a skin-care approach for the scalp, the System 4 trio targets the environment where hair grows to help hair look fuller and healthier while preserving color-treated strands.

How does System Kit 4 improve the look of thinning, color-treated hair?

System Kit 4 works by clearing away sebum, environmental buildup and impurities that can weigh hair down and hide volume. The formula also delivers ingredients to strengthen strands and refresh the scalp so hair appears denser and more vibrant over time.

• Step 1: Cleansing shampoo removes excess sebum and residue from scalp and hair.
• Step 2: Lightweight conditioner restores moisture balance without flattening volume.
• Step 3: Leave-in scalp & hair treatment refreshes the scalp and lifts hair at the root.

What specific benefits can I expect and when?

Users commonly report visible changes in fullness and thickness within weeks when following the three-step routine consistently. Improvements include reduced hair breakage, enhanced shine on color-treated strands, and a scalp environment better suited to fuller-looking hair.

• Visible thickening and fuller appearance reported by many users in about 30 days.
• Reduced breakage through improved hair resilience and moisture control.
• Color protection and UV defense to maintain treated hair vibrancy.

How should I use each product for best results?

Follow the three-step sequence: cleanse, condition, and apply the leave-in treatment to the scalp. Consistent application as directed maximizes the regimen’s ability to remove buildup, balance moisture and add volume at the roots.

• Step 1: Massage cleanser into wet hair and scalp, then rinse thoroughly.
• Step 2: Apply conditioner from scalp to ends, leave briefly if needed, then rinse.
• Step 3: Shake the treatment, apply evenly to the scalp, and do not rinse out.

Will this work with other Nioxin products or styling routines?

Yes—System Kit 4 is formulated to complement other Nioxin Intensive Care treatments and common styling practices. It integrates with color routines and salon services while focusing on scalp health and thicker-looking hair.

• Pairs well with Nioxin serums and maintenance products for longer-term care.
• Compatible with color services; supports color protection during daily care.
• Designed to work under styling products without weighing hair down.

Who is this for: Nioxin System Kit 4 is tailored for people with color-treated, dry or damaged hair experiencing progressed thinning who want a salon-strength, three-step routine that prioritizes scalp health and fuller-looking hair. It’s suitable for anyone seeking to reduce breakage and refresh the scalp while keeping color-treated strands vibrant.

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