NIOXIN Scalp + Hair Thickening System 4 Trial Kit — Color‑Treated/Damaged Hair, Niacinamide & Biotin, 1‑Month Supply

Designed by a salon brand with decades of thinning‑hair expertise, this trial‑size System 4 set combines a cleansing shampoo, lightweight conditioner, and leave‑in scalp treatment to target breakage, remove follicle‑clogging residues, and protect color. The formulas include ingredients such as niacinamide and biotin to support scalp health and improve hair resilience, while professional strength actives aim to deliver visibly fuller hair in about 30 days with regular use.

How does System 4 improve the appearance of hair density?

System 4 focuses on the scalp environment and hair fiber strength to create the look of fuller hair. It gently removes excess sebum and environmental buildup that can limit hair’s natural volume, while conditioning and strengthening strands to reduce breakage.

• Step 1 cleanser clears sebum and environmental residues from scalp and strands.
• Step 2 lightweight conditioner restores moisture balance without weighing hair down.
• Step 3 leave‑in scalp treatment boosts volume at the root and refreshes the scalp.
• Formulated for color‑treated, dry, damaged hair with progressed thinning.

Will this kit protect my color-treated hair while addressing thinning?

Yes — System 4 was crafted specifically for color‑treated hair and includes ingredients that help maintain salon color while improving hair resilience. The conditioning and UV protective components help lock in color vibrancy as you work on reducing breakage and strengthening strands.

• Color‑safe cleanser and conditioner to minimize fading.
• Antioxidant and UV‑protective actives to shield hair from environmental stressors.
• Strengthening ingredients like biotin help reduce breakage, preserving length and color integrity.

How do I use the three steps for best results?

The regimen is simple and designed for daily or regular use. Shampoo to cleanse the scalp and hair, follow with the lightweight conditioner from root to tip, then apply the leave‑in scalp treatment without rinsing to amplify height and refresh the scalp.

• Step 1: Massage shampoo into wet hair and scalp, then rinse thoroughly.
• Step 2: Apply conditioner from scalp to ends, leave briefly, then rinse clean.
• Step 3: Shake the treatment, apply directly to scalp, do not rinse; style as usual.
• Use consistently for visible improvement in about 30 days.

What differences can I expect and how quickly?

With regular use, most users notice a measurable change in texture and fullness within a month. The system is formulated to reduce loss from breakage and to provide an immediate boost in root volume while longer‑term resilience builds over continued application.

• Immediate: cleaner scalp and lightweight lift at the roots.
• 30 days: visible increase in fullness and improved strand resilience for many users.
• Ongoing use: continued protection against breakage and sustained scalp health benefits.

Who is this for? NIOXIN System 4 Trial Kit suits people with color‑treated, dry or damaged hair experiencing progressed thinning who want a salon‑rooted, three‑step program to improve scalp condition, reduce breakage, and create the appearance of thicker, fuller hair. It’s ideal as a trial before committing to a full supply or as part of a maintenance routine for those already using NIOXIN hair systems.

Ingredients

NIOXIN® SHAMPOO: Aqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Citric Acid, Sodium Chloride, PPG-2 Hydroxyethyl Coco/Isostearamide, Sodium Citrate, Sodium Xylenesulfonate, Sodium Benzoate, Salicylic Acid, Sodium Hydroxide, Tetrasodium EDTA, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Trisodium Ethylenediamine Disuccinate, Methylparaben, Polyquaternium-10, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Sodium Acetate, Isopropyl Alcohol, CI 19140, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, CI 42090, Citrus Aurantium Dulcis Fruit Extract, CI 17200, Potassium Sorbate CONDITIONER: 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 TREATMENT: Aqua, Phenylbenzimidazole Sulfonic Acid, Niacinamide, Benzophenone-4, Caffeine, Polysorbate 20, Sodium Hydroxide, Benzyl Alcohol, Sodium Benzoate, Phenoxyethanol, PEG-12 Dimethicone, Citric Acid, Cocamidopropyl Betaine, Acetamide MEA, Isopropyl C12-15-Pareth-9 Carboxylate, Tetrasodium EDTA, Propylene Glycol, Methyl Nicotinate, Sodium Chloride, Parfum, Polysorbate 60, Polysorbate 80, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, PEG-23M, Camellia Sinensis Leaf Extract, Limonene, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Silica, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, Potassium Sorbate