Nioxin System 4 Scalp + Hair Shampoo for Color‑Treated, Damaged Hair — 10 fl oz, Niacinamide & Biotin for Fuller‑Looking Hair

Nioxin System 4 Scalp + Hair Shampoo is a professional cleanser formulated to gently remove residue and moisturize dry, color‑treated hair while supporting the appearance of thicker, fuller hair.

Designed as the first step of Nioxin’s three‑part regimen, System 4 targets dry, damaged, and color‑treated hair with progressed thinning. Its Pro‑Color Shield and Activ Renewal technology work to lift sebum, fatty acids, and environmental buildup from the scalp and hair shaft so follow‑up treatments can perform more effectively. Clinically and dermatologically tested, this 10 fl oz shampoo is intended to cleanse without stripping color while preparing hair for the System 4 conditioner and scalp treatment.

How does this shampoo help hair that’s been color treated and weakened?

The formula balances a cleansing action with moisture retention so dyed hair doesn’t feel brittle after washing. It clears particulates and oily buildup that can weigh hair down while incorporating ingredients like niacinamide and biotin to help strengthen hair structure visually.

• Removes sebum and environmental residue that dulls color and flattens hair.
• Pro‑Color Shield helps protect color vibrancy during routine cleansing.
• Moisturizing agents reduce dryness common after chemical treatments.

What noticeable results can I expect and how quickly?

Users report improvements in hair thickness and fullness when System 4 is used consistently with the full Nioxin regimen. While individual results vary, many see visual amplification of hair structure within weeks as buildup is cleared and the scalp environment improves.

• Visible thicker, fuller appearance with ongoing use as product residue is removed.
• Supports increased hair density and reduced breakage when paired with conditioner and treatment.
• Designed for everyday use—lather for about one minute for best effect.

How should I use this shampoo for best results?

Apply System 4 to thoroughly wet hair, massage into the scalp and hair, lather for approximately one minute, then rinse completely. For a complete regimen, follow with Nioxin System 4 Scalp Therapy Conditioner and the Scalp and Hair Treatment to strengthen hair and amplify structure.

• Use daily or as recommended by your stylist for progressive improvement.
• Combine with the matching conditioner and topical treatment for optimal results.
• Works well on salon‑colored hair—gentle enough to protect shade and shine.

Which scalp and hair concerns does System 4 address?

System 4 is tailored for dry scalps and chemically treated hair experiencing progressed thinning. It is specifically formulated to cleanse follicle‑clogging oils and debris while delivering moisturization so hair looks fuller without compromising color.

• Targets progressed thinning in color‑treated, damaged hair types.
• Reduces follicle‑clogging sebum and fatty acids that can hinder hair appearance.
• Supports scalp health with botanicals, antioxidants, and UV protective ingredients.

Who is this for? Nioxin System 4 Scalp + Hair Shampoo is intended for people with color‑treated, dry or chemically processed hair experiencing progressed thinning who want a professional, salon‑grade cleanser that preps hair and scalp for a thickening regimen. It’s especially suited for those seeking a daily shampoo that removes buildup, maintains color integrity, and enhances the look of fullness when used as part of the complete Nioxin System 4 program.

Ingredients

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