Please can anyone tell me if it leaves your hair crispy or stiff. I have naturally curly hair, not looking for a firm finish,would like a soft bounce

This doesn’t leave your hair in the least bit crispy. I’ve used it for a long time now and my hair feels soft. Don’t use the foam version though as that is definitely crispy

Do I use this on top of step 3 of the 3 step system?

Initially when my hair loss was at its worst I used all Nioxin products, the shampoo, conditioner etc. Now my hair loss is not as bad I tend to use just the Diaboost serum on dry hair to add thickness. This works best for me. Think it’s finding what works best for you.

Do you leave this on or rinse it off? One section says leave 3 mins & rinse well, then in another section it says leave in?

I leave it on for about 3 minutes and then rinse and the. One a month I leave it in over night

Is this the original product?

Yes, definitely. Bought two bottles- they are just the same as my empty bottle which I bought at the hairdresser.

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Description

💥 Boost Your Hair Game: Thicker, Stronger, Unstoppable!

BREAKAGE DEFENSE - Strengthens hair fibers to prevent damage and support longer growth.
EFFORTLESS ROUTINE - Just leave on for 3-5 minutes post-shampoo and rinse for a salon-worthy finish.
SUBTLE UNSCENTED - Fragrance-free formula perfect for sensitive scalps and professional settings.
INSTANTLY FULLER HAIR - Experience visibly thicker, fuller-looking hair from the first use.
PRECISION APPLICATION - Easy-to-use liquid formula that works evenly through hair for consistent results.

Nioxin 3D Intensive Diaboost is a 100 ml leave-in liquid treatment designed to instantly thicken thinning hair by boosting strand diameter and protecting against breakage. Easy to apply after shampooing, it supports longer, fuller-looking hair with a fragrance-free formula tailored for women seeking professional-grade hair care.

Reviews

M**L

Really does work!

Yes this product really works. Was recommended it by my hairdresser… so pleased with it.

10.08.2025

A**R

Good stuff.

Excellent product that helps with thinning hair. I am a regular user of Nioxin shampoo and conditioner to help with my thinning hair caused by medical treatment. It isn't cheap but in my opinion, it is worth every penny. It can be used on wet or dry hair. I have only used it after each shampoo before styling.

30.08.2025

R**A

Makes a difference

I love the smell and the difference it made to my hair. I was bought a bottle for Christmas and I have since bought myself a second bottle. I will say though, it doesn't last long and I feel it only gives a temporary fuller, thicker feeling when used. As soon as I have stopped using it my hair went back to looking and feeling fine and lifeless.

10.07.2024

M**S

The product is excellent

For thickening my hair. Great product

31.10.2024

P**8

Not much improvement

Quite expensive. Recommended by my hairdresser but didn't seem to make much difference to hair breakage

25.02.2025

A**R

It does what it claims.

It does what it says on the label

20.03.2025

L**E

Good product

Good product, I'm using it for few weeks and I feel my hair are getting somehow thicker. Not a huge difference yet, but I assume it might take a while before getting relevant results. I like it and recommend for everyone.

2.04.2024

M**S

Did not suit my scalp

Not for me, I'm using nioxin's other products so thought to give it a go to this one too but it make my scalp dry so stopped using.

11.04.2025

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TrustScore 4.5 | 7,300+ reviews

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Manufacturer	NIOXIN
Package dimensions	17.2 x 6.6 x 6 centimetres
Package Weight	0.15 Kilograms
Item dimensions L x W x H	6.5 x 6 x 17 centimetres
Item weight	0.15 Kilograms
Brand	NIOXIN
Format	Liquid
Volume	100 Millilitres
Scent	Unscented
Special features	Leave In
Target audience	Women's
Item model number	H2977
Product Dimensions	6.5 x 6 x 17 cm; 151 g
ASIN	B07J21PHXD

Nioxin 3D Intensive Diaboost 100 ml

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