NIOXIN Scalp + Hair Thickening Conditioner System 1 — 33.8 fl oz, Lightweight Strengthening & Fullness

This 33.8 fl oz conditioner is the second step in Nioxin's three-part System 1 regimen, designed for natural or untreated hair with light thinning. It pairs a gentle, hydrating base with BioAMP technology, niacinamide and biotin to support hair resilience and improve the appearance of fullness over time. The formula is salon-grade, rinse-out, and intended for daily use after cleansing with the matching Nioxin System 1 shampoo.

How does this conditioner help hair that looks thin?

The conditioner targets the hair shaft and scalp to reinforce weakened strands and preserve moisture balance, creating thicker-looking hair without heaviness. It focuses on strengthening, detangling and smoothing the cuticle so hair appears fuller and more manageable.

• BioAMP technology reinforces hair structure for improved resilience.
• Niacinamide supports an even scalp environment and healthy-looking hair texture.
• Biotin helps condition strands to reduce breakage during styling.
• Lightweight formula avoids weighing down fine hair while adding slip for easier comb-through.

What results can I expect and how quickly?

Visible improvements in fullness and thickness are reported by many users within weeks when the full System 1 protocol is followed consistently. Results vary by individual, but the product is formulated to work cumulatively with daily use to strengthen hair and improve the look of density.

• Designed to show visible improvements in structure with continued use.
• Daily application after shampooing helps maintain moisture and reduce breakage.
• Combining with the System 1 cleanser and treatment gives the most consistent results.

How should I use this conditioner for best effect?

Apply after cleansing with Nioxin System 1 Cleanser Shampoo. Work the conditioner through the scalp and hair, leave on for 1–3 minutes, then rinse thoroughly. Using it as the second step of the three-part system maximizes the product's ability to improve the scalp environment and hair structure.

• Use daily after shampooing for ongoing moisture balance and protection.
• Distribute across scalp and strands, leave 1–3 minutes before rinsing.
• Follow with Nioxin Scalp & Hair Treatment for best cumulative benefits.

Which hair types and concerns is System 1 best suited for?

System 1 is formulated for natural or untreated hair experiencing light thinning. It is lightweight enough for fine textures and aims to protect density while nurturing the scalp without heavy residue or buildup.

• Ideal for fine, natural hair showing light thinning signs.
• Suitable for daily use and works well under styling products.
• Recommended for those seeking a salon-grade regimen to support scalp health and fuller-looking hair.

Who is this for: Nioxin System 1 Scalp Therapy Conditioner is aimed at people with fine or natural hair who notice mild thinning and want a non-greasy, salon-quality conditioner to strengthen strands, improve manageability and support a healthier scalp environment. It’s a practical choice for daily users and anyone following Nioxin’s three-step routine seeking enhanced hair fullness without heavy conditioning agents.

Ingredients

Aqua, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Quaternium-18, Stearyl Alcohol, Bis-Aminopropyl Dimethicone, Hydroxyethylcellulose, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Glyceryl Stearate, Oleyl Alcohol, Methylparaben, PEG-2M, Propylparaben, Polysorbate 60, EDTA, Propylene Glycol, Citric Acid, Limonene, Camellia Sinensis Leaf Extract, Silica, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Citrus Paradisi Peel Extract, Humulus Lupulus Flower Extract, Urtica Dioica Leaf Extract, Faex Extract, BHT, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, CI 42090, Potassium Sorbate, Sodium Benzoate