How do I know which System Kit is right for me?

For natural, untreated hair with light thinning, we recommend System Kit 1. For natural, untreated hair with progressed thinning, we recommend System Kit 2. For damaged, dry, or colored treated hair with light thinning, we recommend System Kit 3. For damaged, dry, or color treated hair with progressed thinning, we recommend System Kit 4.

How do I know which kit to use if I previously used System Kit 5 or 6?

We recently transitioned from 6 kits to 4 to make it even easier to navigate which kit will help you meet your hair goals. If you previously used System Kit 5, we recommend using System Kit 3. If you recently used System Kit 6, we recommend using System Kit 4.

How often should I use the 3-step system to see results?

We recommend using the complete system at least 3 times a week for visible results in 30 days.

System 4 Leave In Treatment 100 mL

FOR COLOR TREATED HAIR WITH PROGRESSED THINNING

What is it: System Kit 4 is designed for color-treated hair with progressed thinning. Clinically and dermatologically tested.

Why you'll love it: It helps to refresh the scalp and increase the volume of every strand, leaving your hair looking fuller and thicker.

Featured ingredients: Delivers essential nutrients and antioxidants to the scalp, nourishing and protecting it against damage. This treatment contains UV protecting ingredients for the scalp and hair.

Real Results

85% of consumers noticed a thickening effect with our hair thickening products

80% noticed an increase in hair density

80% noticed an increase in hair fullness

Infused with nourishing botanicals, antioxidants, and UV protecting ingredients, this kit's Scalp + Hair Thickening Treatment can nourish and revitalize the scalp, improving its overall health and condition.

Aqua/Water/Eau, Niacinamide, Phenylbenzimidazole Sulfonic Acid, Caffeine, Polysorbate 20, Benzophenone-4, Phenoxyethanol, Sodium Benzoate, PEG-12 Dimethicone, Benzyl Alcohol, Sodium Hydroxide, Cocamidopropyl Betaine, Acetamide MEA, Tetrasodium EDTA, Propylene Glycol, Methyl Nicotinate, Mentha Arvensis Leaf Oil, Parfum/Fragrance, Polysorbate 80, Polysorbate 60, PEG-23M, Mentha Piperita (Peppermint) Oil, Limonene, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Lecithin, Tocopheryl Acetate, Biotin, Foeniculum Vulgare (Fennel) Fruit Extract, Silica, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Acer Saccharum (Sugar Maple) Extract, Vaccinium Myrtillus Leaf Extract, Citric Acid, Faex Extract/Yeast Extract/Extrait de levure, Propylparaben, Citrus Aurantium Dulcis (Orange) Fruit Extract, Maltodextrin, Methylparaben, Potassium Sorbate, Ethylparaben, Butylparaben, BHT.

Thickens the hair: clinically designed to add thickness and fullness to dry, damaged, color-treated hair with progressed thinning, with visible results in just 30 days
Supports scalp health: gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp
Reduces hair thinning: helps minimize hair breakage, promoting the appearance of fuller, thicker hair while protecting the hair color
Nourishes the scalp: infused with antioxidants and UV protecting ingredients, this treatment can nourish and revitalize the scalp, improving its overall health and condition

HOW TO USE

Apply Nioxin System 4 Scalp + Hair Thickening Treatment to towel-dried hair, focusing on the scalp and areas of concern.
Massage gently to ensure even distribution.
Do not rinse out. Style as desired.
For optimal results, use alongside Nioxin System 4 Scalp + Hair Shampoo and Conditioner.