NIOXIN Scalp + Hair Thickening Leave-In Treatment 3.4 fl oz — System 1 for Natural Hair, Lightweight Daily Boost

This professional-grade treatment is the finishing step of NIOXIN System 1, designed specifically for naturally textured or untreated hair showing signs of light thinning. The formula combines antioxidants, botanicals, and NIOXIN’s Transactive Delivery System 2.0 to deliver nutrients to the scalp, strengthen individual strands, and boost overall hair fullness and shine without weighing hair down.

How does this leave-on treatment improve hair thickness?

The treatment targets each hair strand to enhance diameter and overall texture, helping hair appear fuller and more resilient. It works as a daily, lightweight boost that integrates with NIOXIN’s three-step regimen to amplify the visual effects of thicker hair.

• Transactive Delivery System 2.0 helps transport key ingredients to the scalp and follicle area.
• Ingredients focus on strengthening strand structure and reducing breakage.
• Regular use increases fullness and visible thickness across the hair fiber.

What scalp benefits can I expect from regular use?

This formula supports a balanced scalp environment by delivering antioxidants and botanicals that help remove build-up and nourish the skin at the roots. A healthier scalp can make styling easier and improve the look and condition of hair over time.

• Gently removes impurities and excess sebum to reduce follicle clogging.
• Supplies antioxidants and botanicals to nourish and protect the scalp surface.
• Promotes a refreshed, non-greasy finish suitable for daily use.

How soon will I notice changes, and how should I use it?

Many users report visible improvements in fullness and texture within weeks when used consistently as part of System 1. Apply to a cleansed, towel-dried scalp and hair; distribute evenly and leave in—no rinsing required.

• Use as the final step after cleansing and conditioning with System 1 products.
• Apply several drops or a short spray across the scalp and massage gently for even coverage.
• Safe for daily use; does not weigh hair down or leave heavy residue.

Will this product change my styling routine?

The leave-on treatment is formulated to integrate seamlessly into existing routines, enhancing texture and manageability without altering styling results. It adds lightweight body and helps protect hair during heat styling and daily manipulation.

• Adds volume and texture for easier styling and more lift at the roots.
• Light, non-greasy formula layers with styling products and heat protection.
• Helps reduce breakage, supporting styles that rely on stronger strands.

Who is this for: NIOXIN Scalp + Hair Thickening System 1 Leave-On Treatment is aimed at people with natural or untreated hair experiencing light thinning who want a salon-quality, daily leave-in that increases hair diameter and supports scalp health. It suits those seeking a non-greasy, fragrance-balanced boost to fullness and texture, and works best when used as the final step in NIOXIN’s System 1 routine.

Ingredients

Aqua, Niacinamide, Caffeine, Phenoxyethanol, Sodium Benzoate, Benzyl Alcohol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Polysorbate 60, Polysorbate 80, Acetamide MEA, Triethanolamine, Propylene Glycol, PEG-23M, Tetrasodium EDTA, Methyl Nicotinate, Parfum, PEG-30 Dipolyhydroxystearate, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Trideceth-6, Camellia Sinensis Leaf Extract, Limonene, Silica, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Tocopheryl Acetate, Citrus Paradisi Peel Extract, Humulus Lupulus Flower Extract, Urtica Dioica Leaf Extract, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, Citrus Aurantium Dulcis Fruit Extract, Potassium Sorbate