NIOXIN System 4 Shampoo & Conditioner Prepack 33.8 fl oz — For Color‑Treated, Damaged Thinning Hair; Strengthens & Adds Density

Nioxin System 4 Shampoo & Conditioner Prepack is a two-step professional regimen formulated to cleanse, strengthen and visibly thicken dry, color-treated hair with progressed thinning.

Designed for people with color-treated, damaged hair that is showing signs of progressive thinning, this System 4 set pairs a derma-purifying cleanser with a lightweight density-protecting conditioner. The formula works to remove buildup that can clog follicles while restoring moisture balance, helping hair look fuller and more resilient without weighing it down. Each bottle contains 33.8 fl oz and comes with pumps for easy, salon-style dispensing.

How does the System 4 cleanser improve scalp and hair clarity?

The System 4 Cleanser targets sebum, fatty acids and environmental residue that accumulate on scalp and strands. By clearing impurities, it helps create a healthier surface for hair fibers to sit on and for topical treatments to penetrate more effectively.

• Pro-Color Shield technology lifts buildup while preserving color vibrancy.
• Derma-purifying action reduces pore-clogging agents on the scalp.
• Professional-strength cleansing without heavy stripping of natural oils.

Will the conditioner add moisture without flattening fine, thinning hair?

The Scalp Therapy Conditioner in System 4 uses lightweight conditioning agents and AMP technology to lock in hydration while maintaining density. It replenishes moisture to damaged, color-treated strands while leaving hair with more body, not weight.

• Amp technology balances moisture to improve elasticity and reduce breakage.
• Formulated specifically for color-treated hair to protect against fading.
• Leaves hair smoother and easier to manage so it appears fuller.

What clinical or consumer results can be expected and when?

Clinical testing and consumer feedback report noticeable improvements in thickness, density and fullness for many users. Visible changes are often reported within about 30 days when used as part of the three-part Nioxin regimen, though individual results vary.

• High consumer-reported gains in thickness, density and fullness.
• Designed to reduce breakage and strengthen fragile, color-treated strands.
• Works as the first two steps in a complete Nioxin protocol for progressive thinning.

How does System 4 support long-term scalp health for colored hair?

Beyond immediate cosmetic benefits, System 4 contains botanical extracts, antioxidants and UV-protecting ingredients that nourish the scalp and help defend hair from environmental stressors. Maintaining a clean, balanced scalp supports the appearance of healthier, more robust hair over time.

• Nourishing botanicals soothe and revitalize the scalp environment.
• Antioxidants and UV defense help protect color-treated hair from damage.
• Reduces factors that can contribute to breakage and thinning when used consistently.

Who is this for: Nioxin System 4 is intended for adults with dry, damaged, color-treated hair experiencing progressed thinning who want a salon-quality, dual-step routine to improve appearance of density. It suits those seeking a lightweight, clinically informed approach that cleanses buildup, reinforces hair resilience and helps protect hair color. For best results, use as part of the full Nioxin three-step program and follow product directions; consult a specialist for personalized scalp concerns.

Ingredients

Shampoo: WATER/EAU, 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 (PEPPERMINT) 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 (FENNEL) FRUIT EXTRACT, SODIUM ACETATE, ISOPROPYL ALCOHOL, YELLOW 5, YEAST EXTRACT/ EXTRAIT DE LEVURE, ACER SACCHARUM (SUGAR MAPLE) EXTRACT, CITRUS LIMON (LEMON) PEEL EXTRACT, SACCHARUM OFFICINARUM EXTRACT, VACCINIUM MYRTILLUS LEAF EXTRACT, BLUE 1, CITRUS AURANTIUM DULCIS (ORANGE) FRUIT EXTRACT, RED 33, POTASSIUM SORBATE. Conditioner: Aqua/Water/Eau, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Stearyl Alcohol, Quaternium-18, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Guar, Glyceryl Stearate, Oleyl Alcohol, Propylparaben, Polysorbate 60, Mentha Piperita (Peppermint) Oil, Mentha Arvensis Leaf Oil, Menthol, Propylene Glycol, Methylparaben, EDTA, Hydroxyethylcellulose, Citric Acid, Camellia Sinensis Leaf Extract, Quaternium-80, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare (Fennel) Fruit Extract, Acer Saccharum (Sugar Maple) Extract, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Vaccinium Myrtillus Leaf Extract, Faex Extract/Yeast Extract/Extrait de levure, Citrus Aurantium Dulcis (Orange) Fruit Extract, Maltodextrin, Blue 1 (CI 42090), Potassium Sorbate, Sodium Benzoate, Ethylparaben, Butylparaben