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

Designed for fine, natural hair showing early signs of thinning, this 16.9 fl oz formula targets the scalp to remove build-up, excess sebum and environmental residues that can hinder healthy-looking hair. Enriched with niacinamide and biotin alongside botanical humectants, it cleans without stripping essential oils so hair gains body, shine and improved manageability. Use as the first step in NIOXIN's three-part System 1 for best results.

How does this shampoo help hair look thicker on busy mornings?

NIOXIN System 1 lifts hair at the scalp and reduces residue that weighs strands down, so hair appears fuller from root to tip. The lightweight cleansing action preserves natural oils while adding volume and texture for easier styling.

• Detoxifies scalp to free clogged follicles for better root lift
• Lightweight formula adds body without heavy residue
• Improves hair texture for quicker styling and longer-lasting volume

What ingredients should I expect and why do they matter?

The shampoo combines niacinamide and biotin with botanicals and humectants to support scalp condition and hair resilience. These components work together to cleanse impurities while helping hair resist breakage and look denser over time.

• Niacinamide: helps support scalp health and surface conditioning
• Biotin: a hair-friendly nutrient that helps strengthen hair fibers
• Botanical extracts and humectants: remove buildup and retain moisture

How should I use NIOXIN System 1 for visible results?

Apply to wet hair, massage into scalp and hair for about a minute to lift impurities, then rinse thoroughly. For a complete regimen, follow with NIOXIN System 1 Scalp Therapy Conditioner and the Scalp & Hair Treatment to maintain scalp balance and maximize thickness benefits.

• Use daily as directed for consistent scalp cleansing
• Massage gently to encourage circulation and product distribution
• Pair with the matching conditioner and treatment for best outcomes

Will this formula work on color-treated or chemically processed hair?

This specific System 1 cleanser is formulated for natural or untreated hair with light thinning; it is optimized to maintain natural oils and a balanced scalp. If your hair is color-treated or chemically processed, consider NIOXIN systems tailored for treated hair to avoid unintended effects.

• Best for non-chemically treated, natural hair types
• Color- or chemical-treated hair may need alternative NIOXIN systems
• Consult product labeling or a stylist for the right system match

Who this is for: NIOXIN System 1 Cleanser Shampoo is intended for adults with fine, natural hair experiencing light thinning who want a salon-grade daily cleanser that lifts roots, removes residue and improves hair texture. It suits those prioritizing scalp health and looking to add visible body and fuller appearance without heavy styling products. If your hair has been chemically altered, choose the NIOXIN system designed for treated hair to ensure optimal care.

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