Use the following zoom and pan buttons to control the image that follows them
Tab through the images or use the previous or next buttons to navigate each product image
or
Offers
Use previous and next buttons to navigate the slides of the %1 Product Carousel
Earn points on this purchase.
Summary
Unlock the secret to thicker, fuller hair with Nioxin Diamax Advanced Hair Thickening Serum, proven to instantly boost hair diameter and protects hair against breakage, allowing it to grow longer* (with daily use).
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
- 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.
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.
Similar items for you
12 items
Use previous and next buttons to navigate the slides of the Similar items for you Product Carousel
The Ordinary
Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair
Moroccanoil
Moroccanoil Treatment Hair Oil
We think you'll like
12 items
Use previous and next buttons to navigate the slides of the We think you'll like Product Carousel
Pureology
Hydrate Conditioner For Dry Hair Nourishment & Moisture
Shark Beauty
SpeedStyle Pro Flex Professional Performance High-Velocity Hair Dryer System
T3
SinglePass Curl X Ceramic Extra-Long Barrel Curling Iron
Shark Beauty
FlexStyle IonCurl Ion Air Drying, Curling & Styling System
Sponsored products
12 items
Use previous and next buttons to navigate the slides of the Sponsored products Product Carousel
NUTRAFOL
Women's Balance 45+ Clinically Proven Hair Growth Supplement
Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
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 ...
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
Impressed
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
I have been using this for about a month. I like the texture of the product. It is easy to apply. I have noticed an increase in growth, and I am starting to see small baby hairs coming up. I'm excited to see how much it continues to help.
It works!
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
First, I love the sleek packaging it comes in. The scent is light, which is great because a lot of hair products are fragrant and it can be overwhelming. I claimed this offer because I wanted to smooth out my hair and hopefully stop of from falling out. Guess what? It worked! After only a couple weeks my hair is feeling smoother, there's less frizz at my roots and I'm actively seeing less breakage. I would definitely buy this again and I wholeheartedly recommend. Thanks Influenster!
It does work
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
I love the smell of the serum. I did notice a difference in my hair. It's hard to tell how much it did work because I haven't been using it for that but my hair was liking it.
Effective Product
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
This is a truly effective product. It doesn't have a scent that I noticed, is clear, light and silky, and doesn't make your hair look greasy or weigh it down! I use about three pumps and apply in three sections, massaging into the scalp. Then I blow dry (I haven't tried it with air drying as I rarely do that). The after pic is after only about 6 uses and I can feel the difference in thickness as well. I'm excited to see continued improvement!
Pleasant scent & texture, good packaging
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
Received this product to try out - I like that this serum comes in a spray bottle for targeted application, rather than with a dropper like the other Nioxin serums. This serum has a pleasant scent, feels lightweight and not sticky. Applied it to damp hair and let it air dry - my hair does seem to look a bit fuller afterwards, but doesn't seem like it does much to reduce shedding.
Questions
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 EngageYou 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 EngageIt 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 EngageThe 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 EngageIt 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 EngageThe 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