Beauty in 2 hours or less—order online, pick up in store.

Use the following zoom and pan buttons to control the image that follows them

Nioxin Diamax Advanced Hair Thickening Serum #1
Nioxin Diamax Advanced Hair Thickening Serum #1

 Diamax Advanced Hair Thickening Serum

$55.00

or

Size:3.3 oz

Offers

Pickup and delivery options

In stock and ready to ship

Usually ships in 24 hours

Save 5% on your first subscription order, then 5% on every recurring order. Enjoy free shipping and cancel anytime!

Earn points on this purchase.

Details

Benefits

  • Fuller, Thicker-Looking Hair: Nioxin Intensive Diamax Advanced is a hair thickening treatment that enhances the appearance of fuller, thicker hair.
  • Boosts Hair Diameter: This advanced formula boosts the diameter of each individual hair strand, creating a voluminous and thicker look.
  • Strengthens and Protects: The treatment strengthens and protects the hair, reducing breakage and promoting healthier, more resilient strands.
  • Nourishes and Energizes the Scalp: Diamax Advanced nourishes the scalp, providing essential nutrients and energizing the hair follicles for improved hair growth.
  • Suitable for All Hair Types: Diamax Advanced is suitable for all hair types and can be used daily as part of your hair care routine.

Item 2623051

How To Use

  • Apply a small amount of the serum directly to your scalp.
  • Gently massage the serum into your scalp using circular motions.
  • Do not rinse out.
  • For best results, use daily as part of your hair care routine.

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.

Ingredients

Alcohol Denat., Aqua/Water/ Eau, Niacinamide, Peg/Ppg-20/23 Dimethicone, Caffeine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Parfum/Fragrance, Glycerin, Tetrahydroxypropyl Ethylenediamine, Mentha Arvensis Leaf Oil, Mentha Piperita (Peppermint) Oil, Peg-30 Dipolyhydroxystearate, Benzyl Salicylate, Hexyl Cinnamal, Trideceth-6, Alpha-Isomethyl Ionone, Limonene, Linalool, Citronellol.

Frequently bought together

3 items

Current Product

Nioxin

Diamax Advanced Hair Thickening Serum

$55.00

Make it a routine

Add these personalized recommendations to complete your beauty routine.

Step 1

Step 2

Step 3

Current Product

Nioxin

Diamax Advanced Hair Thickening Serum

$55.00

Similar items for you

12 items

We think you'll like

12 items

Sponsored products

12 items

Review Snapshot

by PowerReviews

412 ReviewsWrite a Review
89%
of respondents would recommend this to a friend
Ratings Distribution
Pros
Cons
My Beauty Routine Takes
Best For
Describe Yourself
Hair Type
Most Helpful Positive Review
Really Actually Works

I'm in my 50's and my hair is beginning to thin in certain areas. I've always had very thick, but fine, hair so I've never had to deal with thinning hair. This product actually made my hair feel thicker from the very beginning in the areas I was concerned about. It made my hair feel denser yet soft ...

Versus
Most Helpful Critical Review
Another hair treatment

My hairdresser recommended this product. Shortly after applying, it does soak in and dry up nicely. I do not like the smell, but I am also sensitive to perfumes in laundry detergents, so I buy the ones that are "fragrance free". I do not like the instructions at all. Every product Nioxin makes, says...

412 results

This has been helpful

Submitted 2 years ago

By daphineh

From undisclosed

Verified Reviewer

Submitted as part of a sweepstakes entry

Reviewed at

Nioxin EMEA - BV

I like the feel of the product, and the scent from the ingredients is nice, which is always a plus. It's very easy to use. It has helped me with the top of my head, which it was thinning. I do recommend this product for what it does and has to offer

Was this review helpful to you?
Good choice for lack volume

Submitted 2 years ago

By elisen25

From undisclosed

Verified Reviewer

Submitted as part of a sweepstakes entry

Reviewed at

Nioxin EMEA - BV

After nearly a month of using Nioxin Diamax Advanced Hair Thickening Serum, I've noticed some new baby hairs, but the overall change in hair thickness hasn't met my expectations. The serum is light and easy to apply, which I appreciate, but the promised fuller and stronger hair results haven't fully materialized. While there is some growth, the texture and thickness remain largely unchanged. I'm hopeful that continued use might bring better results, but so far, the improvement has been minimal.

Was this review helpful to you?
Easy to use and noticed a difference

Submitted 2 years ago

By mariannes10

From undisclosed

Verified Reviewer

Submitted as part of a sweepstakes entry

Reviewed at

Nioxin EMEA - BV

I was concerned about trying this because i have 4c curly hair. The instructions say to use daily on damp hair. I do not wet my hair daily so this was a concern. I like the nozzle for application. It made it easy to apply and a quick process. I used it every day for a month and did notice my hair seemed fuller. I went to my hair dresser this week and she said my hair was soft and full and looked healthy. I definitely feel like the product works. I was hoping it would help with some thinning hair on my hair line but i saw little difference there. I will continue to use since products like this usually take a few months for full results

Was this review helpful to you?
Does what it says

Submitted 2 years ago

By sarahk859

From undisclosed

Verified Reviewer

Submitted as part of a sweepstakes entry

Reviewed at

Nioxin EMEA - BV

A lightweight serum that helps thicken the strands , doesn't leave any residue , or weigh down hair. Gives hair volume. Smells good too. Great product for the value of the price.

Was this review helpful to you?
Great product that works.

Submitted 2 years ago

By vickiew12

From undisclosed

Verified Reviewer

Submitted as part of a sweepstakes entry

Reviewed at

Nioxin EMEA - BV

I received this product for my honest review. This stuff really works you can really see the difference. This product is odorless not sticky and leaves no residue. If you have thin hair with little to know volume try this product it does not disappoint.

Was this review helpful to you?

Q&A

Showing 5 out of 54 Questions
Q
My hair is so thin and I am a diabetic, which is really bad for your hair anyway. My hair has broken off in CHUNKS! It looks horrible and is HUMILIATING! I don't even leave my house anymore!😢. I am using the generic form of Rogaine- for women, can I use this also? Or should I just use one or the other? Brittle and breakage...I mean SERIOUS BREAKAGE is my issue plus my hair is extremely fine/thin so it looks even worse and is more noticeable. It broke off behind/above ears, all around crown and some underneath!! Help! Any other ideas? Or advice? I'm all ears! No pun intended ugggh!
Asked by Annie
Official Answer By Nioxin - Brand Engage
You may use this product along with Rogaine. Yo may want to get your hair tripped to help even things out, give the style a shape, and removing split ends.Was this answer helpful to you
Q
Does this work if I let my hair dry naturally? Also, is this thickening only temporary or does it actually help thicken each strand of hair after long term use?
Asked by Mel
Official Answer By Nioxin - Brand Engage
It works best as a styling aid when blown dry to reach full potential. It does penetrate each hair making it thicker stronger and protecting it against damage. A wonderful 2-in-1 product.Was this answer helpful to you
Q
Can you tell me The differences between this advanced product and the regular one?
Asked by frankie
Official Answer By Nioxin - Brand Engage
The main difference is that the Advanced will provide up to 8 hours of the look and feel of having 11,000 more strands of hair on your head. Was this answer helpful to you
Q
Is this a styling product or a treatment product?
Asked by Frankie
Official Answer By Nioxin - Brand Engage
It is both! It penetrates each hair strand making it thicker fuller and strengthened against breakage, while it gives added volume and definition to hair that is blown dry after application. This is truly a remarkable product.Was this answer helpful to you
Q
I have the 3 piece kit, 3-D root booster, night density rescue & diamax advanced. I only wash my hair every other day. What products can I use day and night on days when I don't wash my hair & in what order should I apply them? Thanks!
Asked by Sally
Official Answer By Nioxin - Brand Engage
The Diamax Advanced should only be used before blow drying and styling your hair. The 3-D Root Booster should be used twice daily. And the night density rescue is to be used at night. In the morning I would recommend applying the Root Booster prior to the Diamax. On days that you shampoo in the morning use all of the system kit products prior to applying the Root Booster and Diamax. In the evening apply the Hair Booster followed by the Night density Rescue. If you are shampooing in the evening apply products in the following order: Shampoo, Conditioner, Root Booster, Scalp & Hair Treatment then the Night Density Rescue. Was this answer helpful to you