NIOXIN Scalp + Hair Thickening System 1 Shampoo — 16.9 fl oz, Light Thinning, Niacinamide & Biotin

NIOXIN Scalp + Hair Thickening System 1 Shampoo is a detoxifying cleanser formulated to boost body and visibly thicken natural, non-chemically treated hair that shows light thinning.

This salon-grade shampoo uses targeted bionutrient actives, niacinamide and biotin to remove product build-up, pollutants and excess sebum from the scalp while preserving essential oils. The formula creates a cleaner scalp environment that supports stronger-looking strands, increased fullness and improved manageability when used as part of the full System 1 routine.

How does this shampoo refresh a scalp that feels clogged?

The cleansing formula works to clear mineral deposits, styling residues and environmental pollutants that can build up at follicle openings. It gently lifts impurities without stripping the scalp’s natural moisture barrier, helping restore optimal conditions for healthy-looking hair growth.

• Detoxifies scalp by removing product, minerals and pollutants.
• Maintains essential oils to prevent dryness and irritation.
• Niacinamide supports a balanced scalp environment.

Will System 1 add visible thickness and volume?

NIOXIN System 1 is clinically designed for natural hair with light thinning to increase hair fullness and body. Most users report noticeable thickening and density improvements with regular use as part of the three-step system.

• Formulated to increase fullness and strand thickness.
• Visible results reported in about 30 days with consistent use.
• Works best paired with NIOXIN System 1 Conditioner and Treatment.

How should I use this shampoo for best results?

Apply to wet hair, massage into scalp and hair for roughly one minute to activate the cleansing agents, then rinse thoroughly. For sustained improvement in texture and resilience, use daily and follow with System 1 Scalp Therapy Conditioner and the Scalp & Hair Treatment.

• Wet hair thoroughly before application.
• Massage into scalp for one minute to ensure deep cleansing.
• Rinse well and complete the routine with System 1 conditioner and treatment.

What ingredients support hair strength without harsh stripping?

The formula combines botanicals, humectants, niacinamide and biotin to strengthen strands and preserve moisture while removing debris. These actives aim to improve hair resilience and smoothing control without aggressive surfactants that can strip natural oils.

• Biotin helps support hair structure for improved resilience.
• Botanical extracts and humectants retain scalp and strand moisture.
• Targeted actives clear nutrient pathways at follicle sites.

Who is this for: NIOXIN System 1 Cleanser Shampoo is intended for people with natural, non-chemically treated hair experiencing light thinning who want salon-grade scalp detox, increased volume and strengthened strands. It’s a good choice for daily use by anyone seeking a comprehensive three-step routine to improve scalp environment and the appearance of thicker, fuller hair without harsh stripping agents.

Ingredients

Aqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Cocamidopropyl Betaine, Sodium Citrate, Sodium Xylenesulfonate, Sodium Chloride, Cocamide MEA, Sodium Benzoate, Citric Acid, Salicylic Acid, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Tetrasodium EDTA, Sodium Hydroxide, Methylparaben, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Citrus Paradisi Peel Extract, Humulus Lupulus Flower Extract, Urtica Dioica Leaf Extract, CI 42090, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, Potassium Sorbate