NIOXIN System 4 Scalp + Hair Conditioner for Color-Treated, Progressed Thinning Hair — 16.9 fl oz, Lightweight Strengthening with

NIOXIN System 4 Scalp + Hair Conditioner is a lightweight, moisture-balancing conditioner formulated to strengthen color-treated, damaged hair with progressed thinning and leave it looking thicker and fuller.

This conditioner is the second step in the NIOXIN three-part regimen, engineered to support scalp health while improving hair resilience and appearance. Its formula combines BioAMP technology with niacinamide and biotin to help retain moisture, reinforce weakened strands, and enhance hair texture without weighing hair down. Designed for color-treated hair showing advanced thinning, it works alongside a cleanser and topical treatment to create an optimal environment for healthier-looking hair over time.

How does this conditioner help color-treated hair that is thinning?

The formula is tailored to protect and strengthen color-treated strands while addressing thinning. It delivers hydration and structural support to hair fibers, reducing the visible effects of damage and breakage that make thinning more noticeable.

• BioAMP technology helps maintain balanced moisture and reinforces hair structure.
• Niacinamide and biotin work to improve hair texture and resilience.
• Lightweight conditioning avoids buildup that can flatten colored hair.
• Protects color vibrancy while improving fullness appearance.

What is the recommended way to use NIOXIN System 4 for best results?

Use this conditioner as step two after cleansing with the System 4 Cleanser Shampoo. Apply to the scalp and through the lengths, leave on briefly, then rinse to deliver softness and manageability without excess weight.

• After shampooing, distribute evenly from scalp to ends.
• Leave in for 1–3 minutes to allow active ingredients to work.
• Rinse thoroughly and follow with the Scalp & Hair Treatment if using the full system.
• Daily use helps maintain results and moisture balance.

Which scalp and hair concerns does this conditioner address?

This product focuses on improving the look and feel of hair that is both color-treated and experiencing progressed thinning. It targets scalp cleanliness, moisture balance, and strand reinforcement to present a fuller-looking head of hair.

• Helps reduce visible thinning by strengthening fibers and minimizing breakage.
• Supports a healthier scalp environment by avoiding heavy residues.
• Adds manageability and improves combing and styling performance.
• Formulated to compliment salon-strength regimens for thinning hair.

Can I use this conditioner with other NIOXIN products or styling routines?

NIOXIN System 4 Conditioner is designed to be used with the rest of the System 4 kit for the most consistent outcome, but it also integrates well into existing color-protective routines. It won’t interfere with common styling steps and helps hair hold shape while remaining soft.

• Use with System 4 Cleanser and Scalp & Hair Treatment for full protocol results.
• Compatible with heat styling and color services when rinsed thoroughly.
• Lightweight finish blends easily with leave-in products and serums.
• Recommended for daily maintenance to sustain moisture and fullness.

Who is this for: NIOXIN System 4 Scalp + Hair Conditioner is intended for people with color-treated, damaged hair showing progressed thinning who want a lightweight, strengthening conditioner that supports scalp health and improves the look of density. It suits clients seeking salon-grade, daily care that pairs with targeted scalp treatments to help hair appear thicker and more resilient without sacrificing color or manageability.

Ingredients

Aqua, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Stearyl Alcohol, Quaternium-18, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Guar, Bis-Aminopropyl Dimethicone, Glyceryl Stearate, Oleyl Alcohol, Methylparaben, Propylparaben, Polysorbate 60, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, EDTA, Hydroxyethylcellulose, Citric Acid, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Faex Extract, 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