Nioxin System 4 Scalp + Hair Conditioner for Colored, Damaged Hair — 10 fl oz, Lightweight Moisturizing & Density Protecting

Nioxin System 4 Scalp + Hair Conditioner is a lightweight, density-protecting conditioner formulated to moisturize colored, damaged hair while supporting scalp health and fuller-looking hair.

This professional-grade conditioner is Step 2 of Nioxin's three-part scalp therapy regimen, created specifically for color-treated hair with progressed thinning. It combines BioAMP technology with niacinamide and biotin to help retain moisture balance, strengthen hair structure and leave strands feeling resilient without heaviness. Designed to work alongside the matching System 4 cleanser and treatment, this 10 fl oz formula supports a healthier scalp environment and the appearance of thicker, fuller hair when used consistently.

How does this conditioner support colored or damaged hair?

The System 4 conditioner is formulated to be lightweight yet moisturizing so it doesn't weigh down fine, color-treated strands. It helps restore manageability and improves hair resilience after chemical or color services.

• BioAMP technology helps retain moisture balance throughout the fiber.
• Niacinamide and biotin support hair structure and appearance.
• Light, non-greasy texture suitable for processed hair.

Will this help a scalp with progressed thinning?

While not a medical treatment, the conditioner focuses on scalp health and hair strength to create a better foundation for hair appearance. A healthier scalp environment can reduce buildup and help hair look fuller and more resilient.

• Formulated to cleanse and condition without clogging follicles when paired with the System 4 cleanser.
• Nourishing botanicals and antioxidants support scalp condition.
• Regular use in the three-step regimen supports thicker-looking results over time.

How should I use Nioxin System 4 Conditioner for best results?

Use this conditioner after shampooing with the matching System 4 Cleanser. Apply to the scalp and through hair, leave on 1–3 minutes, then rinse thoroughly for daily maintenance of moisture and manageability.

• Step 2 of a three-part routine: Cleanse, condition, then apply the leave-in treatment.
• Designed for daily use; gentle enough for color-treated hair.
• Pair with System 4 Scalp & Hair Treatment to complete the regimen.

What results can I expect and when?

Visible changes in texture and appearance depend on hair condition and routine consistency. Many users notice improved manageability and fuller-looking hair with continued use; clinical use in product testing reported perceived increases in thickness and fullness for many consumers.

• Improved resilience and reduced breakage potential due to strengthening ingredients.
• Enhanced moisture balance without weighing hair down.
• Designed to protect color-treated hair while promoting a healthier scalp environment.

Who is this for: Nioxin System 4 Scalp + Hair Conditioner is intended for people with color-treated, dry or damaged hair experiencing progressed thinning who want a lightweight, salon-grade conditioner. If you follow a Nioxin routine or are seeking a product that aims to support scalp health while improving hair manageability and appearance, this conditioner fits into a daily maintenance program alongside the System 4 cleanser and leave-in treatment.

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