9/1/2026

What are the best thickening products I can use for fuller hair?

Get fuller hair, care for your scalp and promote hair growth in 30 days by using specialist hair thickening products from Nioxin. Learn more about the range here.

women with system 3 kit

What are the best thickening products I can use for fuller hair?


Hair thickening products are shampoos, conditioners, serums and scalp treatments formulated to improve the appearance of hair volume, density and thickness. The best hair thickening products support scalp health, strengthen existing strands and can help make thinning hair look fuller over time.

Nioxin offers a range of hair thickening products like System Kits and styling, formulated with ingredients that give you thicker, fuller hair in 30 days.


Who is Nioxin formulated for?

For women struggling with hair loss, having thinner hair can dent confidence and cause stress, which could make the problem worse. Hair loss in women can present as all-over thinning, more than 125 strands falling out each day, the hair parting getting wider and bald patches appearing on the crown.

Luckily, hair thinning is often reversible, or its progression can be slowed or stopped if it’s treated early. One easy treatment is to swap out your usual hair products for a thickening shampoo and conditioner, like our three-part Nioxin systems that also include a hair thickening serum tailored to your hair type.

Nioxin hair thickening System Kits are uniquely formulated for different hair needs, making it simple to find the solution for you. They are:

  • System Kit 4: for color-treated hair with progressed thinning.

How the Nioxin 3-part system works

Each one of the Nioxin hair thickening System Kits works by cleansing, conditioning and treating the scalp, targeting your specific hair type and issue, to lay the foundation for thicker, fuller-looking locks.

Designed for daily use, simply apply the shampoo to your scalp and gently massage it evenly throughout your hair. After rinsing thoroughly, coat your hair in conditioner from the roots to the ends. Again, rinse out the conditioner thoroughly and towel-dry your hair. Finally, massage your Nioxin System’s hair thickening serum across your whole scalp and through the lengths and ends of your hair, focusing on any areas of concern.

We recommend using the complete system at least three times per week for visible results – 85% of our consumers noticed a thickening effect with our hair thickening products, while 80% noticed an increase in hair density.


Key ingredients that support thicker-looking hair

Our hair thickening products are formulated with key hair strengthening ingredients to help nourish hair at the roots and stimulate follicles. These include:

  • Caffeine: supports hair follicles and maintains the skin barrier
  • Peppermint oil: can assist in regulating sebum production and controlling oiliness
  • 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
  • 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.

Besides using hair thickening shampoos, conditioners and serums containing ingredients that help support your hair goals, eating a healthy diet full of vitamins helps support hair growth from the inside-out. Vitamins and minerals that are known to play important roles in hair growth include:

  • Vitamin D plays a vital part in creating the cells that become hair follicles. If you speak to your healthcare provider about hair loss, they may test your vitamin D levels and prescribe supplements if needed4
  • Iron carries oxygen to hair follicles – keeping them healthy enough to support hair growth. When investigating the cause of hair loss, your healthcare provider might also test for iron deficiency, and if it’s found, may prescribe iron supplements. As too much iron can be toxic, make sure to always follow your prescription instructions exactly
  • Vitamin C is necessary for the body’s absorption of iron. So, if your hair loss is connected to an iron deficiency, ensure you get enough vitamin C alongside taking iron supplements.

Start your Nioxin hair thickening routine today

Build your Nioxin hair thickening routine by selecting the best products for your hair type.

  • First, choose the Nioxin System Kit designed to target your specific hair issue. Use every day, or at least three days a week, for best results
  • Give your hair a temporary boost in-between washes with our Diamax Advanced Hair Thickening Serum, developed to instantly increase hair diameter and thickness for the appearance of thicker hair

Frequently asked questions about hair thickening products


Do hair thickening products actually work, or do they just create the appearance of fuller hair?

Most hair thickening shampoos, conditioners and serums work by making hair appear thicker. They do this by infusing each strand with protein and panthenol (or pro-vitamin B5), giving hair additional volume, making it look plumper, and temporarily strengthening each hair’s outer layer.

Nioxin’s hair thickening systems work differently. Our three-part hair thickening treatments contain ingredients like caffeine and niacinamide, which support hair follicles, nourish roots and benefit overall scalp health with long-term use. In fact, 80% of consumers noticed an increase in hair fullness after 30 days of use.


What is Nioxin and how does it work for thinning hair?

Nioxin is a professional haircare brand specializing in scalp care and hair thickening products for thinning hair. With over 35 years of scalp science expertise, our formulas feature ingredients such as niacinamide, caffeine, biotin, peppermint and mint oil to help nourish the scalp, strengthen hair from root to tip and promote hair growth.


What ingredients should you look for in the best hair thickening products for women?

Nioxin hair thickening products contain caffeine, peppermint oil, niacinamide, wild mint oil and biotin – ingredients which work together to promote hair growth and support both hair and scalp health.


Is Nioxin suitable for early-stage hair thinning, or is it only for advanced hair loss?

Nioxin’s hair thickening products are suitable for early-stage thinning. Our System Kits 1 and 3 are formulated for light thinning, while Kits 2 and 4 target progressed thinning. Discover our full range of hair thickening kits to find the best match for your hair type.


Sources:   NHS, https://www.nhs.uk/symptoms/hair-loss/coping-tips-for-women/ Cleveland Clinic, https://my.clevelandclinic.org/health/diseases/16921-hair-loss-in-women Harvard Health Publishing, https://www.health.harvard.edu/skin-and-hair-health/its-not-too-late-to-save-thinning-hair Harvard Health Publishing, https://www.health.harvard.edu/diseases-and-conditions/vitamins-minerals-and-hair-loss-is-there-a-connection Healthline, https://www.healthline.com/health/biotin-hair-growth Birmingham Dermatology Clinic, https://www.birminghamdermatologyclinic.co.uk/blog/does-hair-thickening-shampoo-really-work/

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