NIOXIN System 1 Shampoo & Conditioner Liter Duo with Pumps — Lightweight, Thickening Kit for Natural Hair

NIOXIN System 1 liter duo is a three-part professional scalp and hair thickening regimen packaged as shampoo and conditioner with pumps, formulated for natural, untreated hair showing light thinning.

NIOXIN brings clinical research into a salon-strength kit designed to prepare the scalp, cleanse away residue, and strengthen hair fiber so strands appear fuller and more resilient. This System 1 set pairs the Activ-Renewal cleanser and a lightweight Scalp Therapy conditioner in convenient one-liter bottles with pumps, making daily use simple for people seeking thicker-looking hair without heavy moisturizers or styling buildup.

How does the NIOXIN System 1 shampoo remove scalp residue without over-drying?

The Activ-Renewal technology in the System 1 cleanser targets sebum, fatty acids and environmental residues that can sit on the scalp and weigh hair down. It deep-cleanses to refresh the scalp surface while maintaining moisture balance so strands don't feel stripped.

• Deep-cleansing formula removes sebum and styling residue
• Formulated for natural, untreated hair with light thinning
• Professional-strength results in an at-home shampoo
• Pump bottle for measured, convenient daily use

In what way does the System 1 conditioner support thicker-looking hair?

The System 1 Scalp Therapy Conditioner uses AMP technology to strengthen hair fiber and help retain moisture without adding weight. It conditions the strand surface to reduce breakage and improves hair resilience so hair appears fuller and smoother.

• Lightweight conditioning to avoid flattening fine hair
• Helps fortify strands to reduce breakage
• Supports longer-lasting style and noticeable body
• Easy rinse-out for a non-greasy finish

What visible improvements can I expect and how quickly?

Clinical consumer feedback indicates many users notice thicker, fuller-looking hair and improved density with regular use. While individual results vary, visible changes are commonly reported within a month when the three-part routine is followed consistently.

• Improved hair thickness and fullness reported by users
• Designed to amplify hair structure for immediate cosmetic lift
• Best results when used as part of the complete NIOXIN regimen
• One-liter bottles support consistent, long-term use

How do I use the liter duo as part of a daily routine?

Use the Activ-Renewal shampoo to cleanse the scalp and hair, rinse thoroughly, then apply the Scalp Therapy conditioner focusing on lengths and ends. Leave the conditioner for a short moment to allow AMP technology to work, then rinse; follow with any additional NIOXIN steps if desired.

• Dispense with pump for controlled amounts
• Shampoo first, then conditioner—use daily or as recommended
• Pair with NIOXIN treatments for enhanced results
• Suitable for styling after rinse-out

Who is this for: NIOXIN System 1 liter shampoo and conditioner duo is intended for people with natural, untreated hair experiencing light thinning who want a professional-strength, lightweight cleansing and conditioning routine. It suits those seeking a scalp-focused approach to improve the look of hair density, users who prefer pump dispensers for convenience, and anyone building a consistent at-home regimen to maintain healthier-looking hair structure.

Ingredients

Shampoo: WATER/EAU, SODIUM LAURETH SULFATE, SODIUM LAURYL SULFATE, COCAMIDOPROPYL BETAINE, SODIUM CITRATE, SODIUM XYLENESULFONATE, SODIUM CHLORIDE, COCAMIDE MEA, SODIUM BENZOATE, CITRIC ACID, SALICYLIC ACID, MENTHA PIPERITA (PEPPERMINT) 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 (GRAPEFRUIT) PEEL EXTRACT, HUMULUS LUPULUS (HOPS) FLOWER EXTRACT, URTICA DIOICA (NETTLE) LEAF EXTRACT, BLUE 1, YEAST EXTRACT/EXTRAIT DE LEVURE, ACER SACCHARUM (SUGAR MAPLE) EXTRACT, CITRUS LIMON (LEMON) PEEL EXTRACT, SACCHARUM OFFICINARUM EXTRACT, VACCINIUM MYRTILLUS LEAF EXTRACT, CITRUS AURANTIUM DULCIS (ORANGE) FRUIT EXTRACT, POTASSIUM SORBATE. Conditioner: Aqua/Water/Eau, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Quaternium-18, Stearyl Alcohol, Hydroxyethylcellulose, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Mentha Piperita (Peppermint) Oil, Mentha Arvensis Leaf Oil, Menthol, Glyceryl Stearate, Oleyl Alcohol, Propylene Glycol, Methylparaben, PEG-2M, Propylparaben, Polysorbate 60, Quaternium-80, EDTA, Citric Acid, Limonene, Camellia Sinensis Leaf Extract, Silica, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Citrus Paradisi (Grapefruit) Peel Extract, Humulus Lupulus (Hops) Flower Extract, Urtica Dioica (Nettle) Leaf Extract, BHT, Acer Saccharum (Sugar Maple) Extract, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Vaccinium Myrtillus Leaf Extract, Faex Extract/Yeast Extract/Extrait de levure, Citrus Aurantium Dulcis (Orange) Fruit Extract, Potassium Sorbate, Sodium Benzoate, Maltodextrin, Blue 1 (CI 42090), Ethylparaben, Butylparaben