• Nioxin Diamax Advanced Hair Thickening Serum - DermStreet
  • Nioxin Diamax Advanced Hair Thickening Serum - DermStreet
  • Nioxin Diamax Advanced Hair Thickening Serum - DermStreet
  • Nioxin Diamax Advanced Hair Thickening Serum - DermStreet

Nioxin Diamax Advanced Hair Thickening Serum

Hair Care • Serum • 3.3 oz
Regular price $55
30% OFF with code PREFALL30 View Details
EARN +550 POINTS WHEN PURCHASING THIS PRODUCT
Product Benefits
  • Improves hair’s strength and resilience, making it more resistant to damage from brushing, styling, and environmental stress
  • With consistent use, it supports a denser appearance, especially in areas experiencing thinning
  • Helps lift hair at the root level to create a voluminous, more textured effect without sticky residue
Expert Review
Applies easily and absorbs quickly without weighing hair down or leaving behind a heavy or oily feel.
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Nioxin Diamax Advanced Hair Thickening Serum is a powerful leave-in treatment formulated to boost the thickness and fullness of each hair strand. Ideal for those experiencing thinning hair, this lightweight serum helps reinforce hair resilience, making it more resistant to breakage and styling stress. It penetrates deep into the hair to support strength from within, leaving hair looking visibly fuller, more voluminous, and healthier over time, without weighing it down or leaving residue. Suitable for daily use on fine or thinning hair, and gentle enough for color-treated or chemically processed hair, while still delivering noticeable thickening results.

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  • 5 stars: 20 (74%)
  • 4 stars: 4 (15%)
  • 3 stars: 3 (11%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Ana-Maria
Hair pro

My hair got structure after I started using it!

A
Amiah

My stylist noticed that my hair looks fuller and has more body since I started using this.

A
Amiya

My hair feels instantly thicker after applying this serum.

H
Hanna

I like that it adds thickness without any sticky or heavy feel.

M
Maliyah

It helps protect my hair from breakage when I blow-dry or style.

C
Caylee

It gives my hair more volume and makes it easier to style.

T
Tamara

The formula is lightweight and doesn’t make my roots greasy.

F
Finley

It doesn’t flatten my hair or make it stiff, it just feels naturally thicker.

M
Madalyn

I use it daily, and my hair feels fuller and more voluminous all day long.

S
Selina

It absorbs quickly and leaves my hair soft and bouncy.

L
Liberty

My scalp feels refreshed and my strands feel stronger from root to tip.

A
Alivia

The serum makes my hair look healthier and more resilient overall.

N
Nathalia

I noticed a difference in density after just a couple of weeks of use.

A
Ashlyn

My fine hair feels stronger, and I’ve noticed less breakage when brushing.

Y
Yamilet

My fine hair looks fuller and feels stronger after a few uses.

J
Jazmin

I love that it gives me thickness and shine without leaving buildup.

P
Paloma

I pair it with my Nioxin shampoo and conditioner, and together they make a noticeable difference.

J
Joyce

This serum truly adds volume, strength, and body to my thinning hair without making it heavy or greasy, my hair feels thicker and healthier every day.

A
Abbigail

My hair feels stronger, especially near the crown where it’s thinning.

C
Charlee

I’ve been using it for about a month, and my hairline looks denser and stronger.

B
Bridget

I love how soft and full my hair feels after using this. It makes styling so much easier.

J
Juliet

My hair looks healthier and fuller, and it feels smoother when I run my hands through it.

D
Dalia

My hair feels thicker right after I blow-dry, and the results last throughout the day.

Y
Yaritza

The serum has become part of my daily routine, it gives me confidence because my hair looks fuller.

T
Tamara

I’m in my 40s and have thinning hair, and this has helped bring back volume I thought I lost.

N
Natalya

The spray bottle makes it easy to apply evenly through my hair.

R
Rosa

It gives me instant volume but also helps my hair feel thicker over time.

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