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Summary
Designed for dry, damaged, colored hair with progressed thinning. Clinically and dermatologically tested, this shampoo nourishes and gently cleanses your hair to prevent against follicle-clogging sebum, resulting in thicker, fuller hair while protecting its' color.
Benefits
- Thickens the hair: Nioxin System Kit 4 is clinically designed to add thickness and fullness to dry, damaged, color-treated hair with progressed thinning, with visible results in just 30 days.
- Nourishes the scalp: 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.
Research Results
- 85% of consumers noticed a thickening effect, 80% noticed an increase in hair density, 80% noticed an increase in hair fullness
Disclaimers
- *Based on a survey among 230 U.S. panelists concerned about thinning hair who tried the systems (each tested 1 system kit), conducted by SIRS, 2016
Item 2623223
Apply shampoo to scalp and massage evenly. Rinse thoroughly.
Pre-caution: Do not get into the eyes. Keep out of reach of children. For any questions or concerns about side effects, always consult a medical professional.
Aqua/Water/Eau, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Sodium Chloride, PPG-2 Hydroxyethyl Coco/Isostearamide, Sodium Benzoate, Citric Acid, Salicylic Acid, Mentha Arvensis Leaf Oil, Mentha Piperita (Peppermint) Oil, Tetrasodium EDTA, Trisodium Ethylenediamine Disuccinate, Methylparaben, Polyquaternium-10, Propylene Glycol, Sodium Hydroxide, Limonene, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Niacinamide, Panthenol, Biotin, Lecithin, Tocopheryl Acetate, Foeniculum Vulgare (Fennel) Fruit Extract, Yellow 5 (CI 19140), 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, Propylparaben, Blue 1 (CI 42090), Phenoxyethanol, Citrus Aurantium Dulcis (Orange) Fruit Extract, Red 33 (CI 17200), Maltodextrin, Potassium Sorbate, Sodium Citrate, Ethylparaben, Butylparaben, Sodium Xylenesulfonate.
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FAQs
Will this help hair look thicker?
Yes, this shampoo thickens the hair appearance and supports fuller-looking hair, with visible results in just 30 days.
Is this safe for color-treated hair?
Yes, this shampoo protects color while nourishing the scalp and hair.
How does this product support the scalp?
This shampoo nourishes and revitalizes the scalp, helping maintain a healthier-looking scalp environment and reducing follicle-clogging buildup.
Are there consumer results or study findings?
Consumer testing showed that 85% of participants noticed a thickening effect, 80% noticed increased hair density, and 80% noticed increased hair fullness.
Reviews
Review Snapshot
by PowerReviews
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Most Helpful Positive Review
Am a Nioxin convert
I started using all Nioxin 3 products one month ago; shampoo, conditioner, scalp treatment, volumizing thickening spray and extra hold hairspray. Since I use them all together, it's hard to say specifically if one of the products works or doesn't. In my honest opinion, the Nioxin line has improved t...
Most Helpful Critical Review
more hair shedding
I have thinning hair in the frontal region. My hair part isn't noticeably thinning, but it could be better. I attribute my hair loss to genetics. It started in my teens so i've tried several products and topical medications to ease reduce the rate of shedding, and possibly to regrow hair as well. Ba...
4597 results
Doesn't work
I have purchased the Nixon set for my thinning hair and noticed that it didn't help hair fall. So I bought this shampoo to stop my hair falling off. But it doesn't work. My hair still falls and may be worse. Very disappointed.
great product for thin hair
really helps with thinner hair
Like this product and have high hopes
It's too soon to give a review if this product will help regrow my hair but i will say it feels good on my hair, it literally only takes a dime size amount to get a good lather that i let sit for the 2 mins and then rinse out
I love this product
this product is pretty remarkable. I have been using it for the last few months and my hair is coming in thicker and I have new growth.


I will never order anything from Ulta again. Had to
Still never received the product or the refund
Questions
Q&A
Showing 5 out of 1414 Questions
- Q
Can I use this when I already use Minoxidil daily or alternate days?
- Asked by Skincare enthusiast
- Official Answer By Nioxin - Brand EngageIt is not recommended to use both Hair Fall Defense Serum and Minoxidil products. Even at differing times or days the products will cause scalp irritation.Was this answer helpful to you
- Q
My hair is not damaged will this weigh my thin hair down?
- Asked by Miche
- Official Answer By Nioxin - Brand EngageThank you for reaching out! You can rest assured that System Kit 4 Scalp Therapy Conditioner will not weigh your thin hair down, even if your hair is not damaged. Nioxin conditioners are specifically formulated differently from traditional, heavy deep conditioners. Here is why it works so well for thin hair: Designed for the Scalp & Fine Hair: Unlike traditional conditioners that you apply only to the mid-lengths and ends, Nioxin Scalp Therapy Conditioners are lightweight, water-based formulas meant to be applied from root to tip—including directly on the scalp—without leaving heavy residue or oiliness. Moisture Balance for Chemical/Color Treatment: System 4 is designed for color-treated or chemically treated hair experiencing progressed thinning. Even if your hair doesn't feel rough or damaged, chemical processing strips away natural moisture. System 4 delivers necessary moisture to help maintain elasticity and resilience while keeping the hair strand feeling light, airy, and voluminous. Pro-Color Shield Technology: It helps protect your color investment and strengthens the hair structure against mechanical breakage without adding flat, heavy silicone build-up. How to Apply for the Best Volume: After shampooing, apply the System 4 Scalp Therapy Conditioner gently from your scalp all the way down to your ends. Leave it on for 1 to 3 minutes to allow the scalp-nourishing ingredients and lightweight moisture to absorb. Rinse thoroughly. Your hair will feel refreshed, manageable, and noticeably thicker without losing its natural body or bounce!Was this answer helpful to you
- Q
Can you use the Volumizing Dry Shampoo for texture and volume as a styling product?
- Asked by BJ
- Official Answer By Nioxin - Brand EngageYes, Our Volumizing Dry Shampoo is an instant refresh solution for fine hair, leaving it looking thicker and fuller. It adds volume, texture, and fullness to your hair without the need for water. Instructions for Use: Shake the can well before each use. Hold the can about 6-8 inches away from the hair and spray evenly onto the roots. Massage the product into the scalp and brush through to distribute evenly. Style as desired.Was this answer helpful to you
- Q
Is this good for hair thinning from chemotherapy?
- Asked by MJ
- Official Answer By Nioxin - Brand EngageThe Nioxin System 2 Kit is a 3-step regimen designed to clear scalp residue, strengthen delicate strands against breakage, and boost visual hair density for natural hair with progressed thinning. The Nioxin System 2 Kit can be helpful during post-chemotherapy recovery, but it will not prevent or treat active chemotherapy-induced hair loss (anagen effluvium). How Nioxin System 2 Helps Post-Chemotherapy Optimizes the Scalp Environment: Chemotherapy targets rapidly dividing cells, including hair follicles. Once treatment ends and follicles begin to recover, System 2 cleanses the scalp by removing residue, excess oils, and environmental buildup. Strengthens New Growth: Key ingredients like niacinamide, biotin, and caffeine nourish the scalp, strengthen fragile new strands, and reduce breakage as hair grows back. Provides Visual Thickness: The 3-step regimen (cleanser, conditioner, and leave-in scalp treatment) helps fine or delicate new growth look fuller and denser. Important Considerations & Precautions Active Chemotherapy: During active chemotherapy treatment, topical thickening products like Nioxin cannot stop hair shedding. Scalp Sensitivity: Post-treatment scalps are often extra sensitive or tender. Nioxin products contain tingling ingredients such as wild mint oil and peppermint oil, which can sometimes irritate a delicate scalp. Medical Clearance: Always consult your oncologist or dermatologist before starting any new scalp treatments or hair regimens after cancer treatment.Was this answer helpful to you
- Q
Can I use a different brand conditioner with this shampoo?
- Asked by Tin
- Official Answer By Nioxin - Brand EngageThese are best paired with the System Kit Conditioner that best fits your hair type. Nioxin System Kit 1: clinically designed to add thickness and fullness to natural hair with light thinning Nioxin System Kit 2: is clinically designed to add thickness and fullness to natural hair with progressed thinning Nioxin System Kit 3: is clinically designed to add thickness and fullness to dry, damaged, and or color-treated hair with light thinning Nioxin System Kit 4: is clinically designed to add thickness and fullness to dry, damaged, and or color-treated hair with progressed thinning Please call Nioxin Technical support at 800-935-5273 for additional information and product recommendations.Was this answer helpful to you