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Nioxin ProfessionalNIOXIN Density Defend Diaboost Hair Thickening Serum 100ml
Product Description
We are Nioxin, the #1 Professional brand for thicker, fuller hair. We are pioneers of a hair movement that's never going to stop. We believe everyone should experience the uplift that comes from having hair that looks and feels the way they actually want it to: Thicker. Fuller. Healthier.
Built on a legacy of clinically proven solutions, we turn scalp science into true scalp care and hair thickening products. The kind of products with proven results. Because everyone, yes everyone, deserves to grow thicker, fuller hair they can see and feel. Nioxin Grows Results(TM).
TEST RESULTS
Fuller, Thicker-Looking Hair: Diaboost 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: Diaboost nourishes the scalp, providing essential nutrients and energizing the hair follicles for improved hair growth.
Nourishes and Energizes the Scalp: Diaboost nourishes the scalp, providing essential nutrients and energizing the hair follicles for improved hair growth.
Suitable for All Hair Types: Diaboost is suitable for all hair types and can be used daily as part of your hair care routine.
USAGE RESTRICTIONS
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.
Built on a legacy of clinically proven solutions, we turn scalp science into true scalp care and hair thickening products. The kind of products with proven results. Because everyone, yes everyone, deserves to grow thicker, fuller hair they can see and feel. Nioxin Grows Results(TM).
TEST RESULTS
Fuller, Thicker-Looking Hair: Diaboost 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: Diaboost nourishes the scalp, providing essential nutrients and energizing the hair follicles for improved hair growth.
Nourishes and Energizes the Scalp: Diaboost nourishes the scalp, providing essential nutrients and energizing the hair follicles for improved hair growth.
Suitable for All Hair Types: Diaboost is suitable for all hair types and can be used daily as part of your hair care routine.
USAGE RESTRICTIONS
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.
Directions
1. Apply a small amount of the serum directly to your scalp.
2. Gently massage the serum into your scalp using circular motions.
3. Do not rinse out.
4. For best results, use daily as part of your hair care routine
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.
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
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Rated 5 out of
5
by
justynab87_7744 from
It does the job
[This review was collected as part of a promotion.] Nioxin Density Defend Diaboost Hair Thickening Serum is a leave-in, scalp-applied treatment that instantly increases the diameter of each hair strand, giving fuller, thicker-looking hair. It’s designed to strengthen and nourish the hair while protecting against breakage—supporting longer, more manageable strands with daily use .
Core Ingredients & Actions:
• Niacinamide (Vitamin B3): Nourishes the scalp and hair roots, supporting healthier follicles 
• Caffeine: Boosts blood circulation to the scalp, energizing follicles and promoting strand strength 
• Wild Mint & Peppermint Oils: Refreshing, invigorating scalp circulation and helping regulate sebum 
It’s suitable for all hair types and meant to be used daily, without rinsing out, ideally paired with Nioxin’s Scalp + Hair Thickening System .
Date published: 2025-07-19
Rated 5 out of
5
by
laurab66_1646 from
Easy use
[This review was collected as part of a promotion.] Great little product. Smells amazing! A little goes a long way. Easy to use as little sprayer on end is easily directed and easy to press. Doesn't make hair feel or look greasy. Really happy with the product around my hairline.
Date published: 2025-07-19
Rated 3 out of
5
by
lucyh230_4723 from
Watery
[This review was collected as part of a promotion.] The serum is quite watery and I really didn’t see any difference after I used it for a few weeks. The bottle is easy to use and it has the same minty scent as the other products. My hair does feel better after postpartum hair loss by using all these products together.
Date published: 2025-07-18
Rated 5 out of
5
by
rebeccat153_9281 from
Must buy
[This review was collected as part of a promotion.] Since using this serum my hair feels so much thicker. It has a tingly feel to the head, smells a little minty and your hair feels so fresh after washing
Date published: 2025-07-17
Rated 4 out of
5
by
christinaw146_4315 from
Noticeable thickness
[This review was collected as part of a promotion.] I have been using this product for around a month alongside the conditioner and shampoo from the Nioxin range.
The packaging is very easy to use and the pump doesn’t drip. You can see how much product is remaining.
The smell is very pleasant and almost floral. Compared to the minty shampoo and conditioner I find the scent blends in upon use.
The serum is non greasy and suitable for daily use. It doesn’t weigh down hair and allows for volume still. My hair feels well conditioned.
Overall I will continue to use alongside the other products in the range as I am seeing thickness at the roots and my scalp appears less visible.
Date published: 2025-07-17
Rated 5 out of
5
by
katarzynad7_9307 from
Great product
[This review was collected as part of a promotion.] Great scent and effectiveness, after a few weeks of regural use I can see the difference in my hair which are due to hormon problems very thin and I'm loosing them quite a lot.
Great ingredients, smell good.
Date published: 2025-07-17
Rated 5 out of
5
by
emmah393_9606 from
Great product
[This review was collected as part of a promotion.] Great product that isn’t greasy and seems to be working. Easy to use and I’m hoping that it helps my thinning hair long term. Well worth a try if this is something you're looking for.
Date published: 2025-07-14
Rated 5 out of
5
by
liag97_6365 from
Strong hair
[This review was collected as part of a promotion.] Nioxin serum has made a noticeable difference in my hair—thicker, fuller, and healthier! The texture is smooth, and it lathers well. The scent is refreshing but not overpowering. Great value for money, and the sleek, sturdy packaging is perfect for daily use. Highly recommend
Date published: 2025-07-13
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