Nioxin System 4 Scalp + Hair Shampoo for Colored, Damaged Hair (10 fl oz) with Niacinamide & Biotin

Nioxin System 4 Scalp + Hair Shampoo is a professional-grade cleanser formulated to gently remove residue and support thicker-looking, color-treated hair with progressed thinning.

This shampoo is the first step in Nioxin's three-part System 4 regimen, created for dry, damaged, chemically treated hair that shows advanced thinning. With Pro-Color Shield and Activ Renewal technology, the formula targets sebum, fatty acids and environmental buildup on the scalp and hair shaft while helping preserve color. It’s clinically and dermatologically tested and designed to prepare the scalp so follow-up conditioner and treatment can work more effectively.

How does this shampoo improve hair appearance without stripping color?

System 4 combines gentle cleansing agents with Pro-Color Shield to lift oils and grime while minimizing color fade. The result is a cleaner scalp and hair that appear fuller without aggressive pigments loss.

• Pro-Color Shield protects hair dye from premature fade.
• Activ Renewal clears follicle-clogging sebum and residues.
• Formulated for chemically treated, dry hair to maintain moisture balance.

What should I expect when using Nioxin System 4 daily?

Daily use is designed to refine the scalp environment and strengthen hair structure over time. Users often notice improved hair texture and a thicker look within weeks when the full system is used consistently.

• Massage into wet hair, lather for about one minute, then rinse thoroughly.
• Use every day as step one in the 3-part System 4 routine for best results.
• Follow with System 4 Scalp Therapy Conditioner and Scalp & Hair Treatment to amplify effects.

Which scalp and hair concerns does System 4 address?

This shampoo is tailored for dry, damaged hair that has been color-treated and is experiencing progressed thinning. It focuses on removing buildup that can interfere with follicle performance and hair strength, rather than treating medical causes of hair loss.

• Removes oil, product residue, and environmental pollutants from scalp and hair.
• Helps strengthen fragile strands to reduce breakage and the appearance of thinning.
• Moisturizes chemically treated hair to improve manageability and shine.

How do key ingredients like niacinamide and biotin support the formula?

Niacinamide and biotin are included to support scalp condition and hair resilience; they work alongside cleansing agents to promote a healthier-feeling scalp and improved strand strength. The overall formulation is balanced to avoid over-drying while helping hair look fuller.

• Niacinamide helps maintain scalp comfort and overall skin condition.
• Biotin contributes to stronger-looking hair structure and resilience.
• Botanical extracts and antioxidants help nourish and protect hair fibers.

Who is this for: Nioxin System 4 Scalp + Hair Shampoo is intended for people with color-treated, dry or chemically processed hair who are experiencing progressed thinning and want a salon-grade cleansing step that prepares the scalp for targeted thickening treatments. It suits users seeking a daily cleanser that removes buildup, supports color retention and helps hair appear fuller when used as part of the complete System 4 regimen.

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