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.

Can I use the Nioxin System 2 leave-in treatment every day?

For optimal results, use the Nioxin System 2 Leave-In Treatment daily for visible results in 30 days

What are signs of progressed thinning?

Advanced thinning may become more noticeable over time. Signs can include a wider-looking part, increased scalp visibility, noticeably reduced hair density, and difficulty achieving fuller-looking styles.

How is thinning different from hair fall?

Hair fall refers to the shedding of individual hair strands, which can be a normal part of the hair growth cycle. Hair thinning refers to a gradual reduction in hair density, which can make hair feel less full over time. Signs of thinning may include a smaller ponytail, less volume, or reduced hair density.

Can I use System 2 on color-treated hair?

Nioxin System 2 is specifically formulated for natural, untreated hair with progressed thinning. If your hair is color-treated, highlighted, bleached, or chemically processed, we recommend System 4, which is designed for dry, damaged or color-treated hair with progressed thinning.

What products should I use with Nioxin System 2 Leave In Treatment?

For a complete thinning hair routine, pair the System 2 Leave-In Treatment with the System 2 Shampoo and Conditioner. Choose the Trial Size Kit and Full-Size Kit based on your routine needs.

System 2 Leave In Treatment 200 mL

DAILY LEAVE-IN SCALP TREATMENT FOR NATURAL, UNTREATED HAIR WITH PROGRESSED THINNING | ADVANCED STRENGTH

Current price $43.00

The Nioxin System 2 Scalp + Hair Thickening Treatment is designed for natural, untreated hair with progressed thinning. Applied directly to the scalp and left in, it helps support a healthy scalp environment while enhancing the appearance of thicker-, fuller-looking hair.

This lightweight leave-in treatment helps:

Refresh and nourish the scalp

Improve the appearance of hair thickness and density

Support a healthy scalp environment

Leave hair looking fuller and more voluminous

For best results, use as part of the complete Nioxin System 2 regimen.

Featured Ingredients

Niacinamide

A form of vitamin B3, that helps to increase the diameter of each hair strand and improve the scalp skin barrier function

Caffeine

Known to help stimulate hair follicles, maintain the skin barrier, and with massage improves blood microcirculation

Mentha Arvensis Leaf Oil

Also known as wild mint oil, this oil is known for its refreshing and invigorating benefits that stimulate the scalp and promote circulation

Full Ingredients List:

Aqua/Water/Eau, Niacinamide, Phenylbenzimidazole Sulfonic Acid, Caffeine, Polysorbate 20, Benzophenone-4, Phenoxyethanol, Sodium Benzoate, Benzyl Alcohol, PEG-12

Dimethicone, Sodium Hydroxide, Cocamidopropyl Betaine, Acetamide MEA, Propylene Glycol, Tetrasodium EDTA, 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, Tocopheryl Acetate,

Lecithin, Biotin, Citrus Paradisi (Grapefruit) Peel Extract, Humulus Lupulus (Hops) Flower Extract, Urtica Dioica (Nettle) Leaf Extract, Silica, Citric Acid, Vaccinium Myrtillus Leaf

Extract, Acer Saccharum (Sugar Maple) Extract, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Faex Extract/Yeast

Extract/Extrait de levure, Propylparaben, Citrus Aurantium Dulcis (Orange) Fruit Extract, Potassium Sorbate, Maltodextrin, Methylparaben, Ethylparaben, Butylparaben, BHT

HOW TO USE

Apply Nioxin System 2 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 2 Scalp + Hair Shampoo and Conditioner.

TARGETED LEAVE-IN SCALP APPLICATION

Easy to apply leave in treatment designed for natural, untreated hair with progressed thinning.

SCALP CARE

Helps support a healthy scalp environment while enhancing the appearance of hair thickness and density.

VISIBLE RESULTS IN AS LITTLE AS 30 DAYS*

Hair looks thicker, denser and fuller with continued use as part of your System 2 routine.

WHICH KIT IS RIGHT FOR ME?

SYSTEM KIT 1

For natural, untreated hair with light thinning. Best for those beginning to notice less fullness and volume.

SYSTEM KIT 2

For natural, untreated hair with progressed thinning. Best for more noticeable changes in fullness and scalp visibility.

SYSTEM 3 KIT

For dry, damaged, or color-treated hair with light thinning. Best for hair experiencing reduced fullness and volume.

SYSTEM KIT 4

For dry, damaged, or color-treated hair with progressed thinning. Best for more noticeable changes in fullness and scalp visibility.

WHY SCALP CARE MATTERS FOR THINNING HAIR

Healthy-looking hair starts with the scalp. Over time, buildup, excess sebum, and environmental stressors can impact the scalp environment.

Scalp-focused care helps create the foundation for thicker-, fuller-looking hair. Nioxin's scalp-first approach is designed to support the scalp while helping hair appear denser and more voluminous.

Learn more about the importance of scalp care HERE.

WHY SCALP CARE MATTERS FOR THINNING HAIR

Ingredients

CAFFEINE

Supports hair follicles, improves blood circulation and maintains the skin barrier

MENTHA ARVENSIS LEAF OIL

Also known as wild mint oil, this oil is known for its refreshing and invigorating benefits that stimulate the scalp and promote circulation

NIACINAMIDE

A form of Vitamin B3, niacinamide helps nourish the hair root and can have a positive impact on hair growth and overall scalp health

COMPLETE YOUR THICKENING ROUTINE

System Kit 2 Full Size Kit
BESTSELLER
System Kit 2 Full Size Kit
3-STEP THICKENING SYSTEM | PROGRESSED THINNING ADVANCED STRENGTH FOR NATURAL HAIR
System 2 Shampoo 300 mL
System 2 Shampoo 300 mL
SCALP + HAIR CLEANSING SHAMPOO FOR NATURAL, UNTREATED HAIR WITH PROGRESSED THINNING | ADVANCED STRENGTH
System 2 Conditioner 300 mL
System 2 Conditioner 300 mL
SCALP + HAIR CONDITIONER FOR NATURAL, UNTREATED HAIR WITH PROGRESSED THINNING | ADVANCED STRENGTH
System 2 Leave In Treatment 200 mL
System 2 Leave In Treatment 200 mL
DAILY LEAVE-IN SCALP TREATMENT FOR NATURAL, UNTREATED HAIR WITH PROGRESSED THINNING | ADVANCED STRENGTH