Nioxin Diamax Advanced Hair Thickening Serum 100ml / 3.3 fl oz
What is it: This Advanced Hair Thickening Serum is proven to instantly boost hair diameter and protects hair against breakage, allowing it to grow longer.
Why you’ll love it: Our advanced formula is specifically designed to boost hair thickness and density, giving you thicker, fuller-looking hair instantly. This powerful hair thickening serum not only enhances the thickness of your hair but also strengthens and nourishes it from within, leaving it more manageable.
Featured ingredients: Formulated with powerful ingredients like caffeine, wild mint oil, peppermint oil, and niacinamide.
| Product Details |
|---|
| Volume: 100ml (3.3 fl oz) |
| Form: Serum |
| Key Ingredients: Caffeine, Wild Mint Oil, Peppermint Oil, Niacinamide |
| Benefits: Boosts hair diameter, protects against breakage, enhances thickness and density |
FAQ
How should I apply the hair thickening serum?
Apply a small amount to damp hair, focusing on the mid-lengths and ends. Use after washing and before styling for best results.
Can this serum be used on colored hair?
Yes, this serum is safe to use on colored hair and helps protect the color while enhancing thickness.
How long does it take to see results?
Users typically notice improved hair fullness within a few weeks of consistent use.

Owen Miller –
I’ve used this serum for about two months now and can clearly see more volume in my hair. It feels lightweight and doesn’t make my hair look greasy. The caffeine and mint oils give it a refreshing feel.
Joe Clark –
It works well for adding thickness, especially at the roots. I apply it every other day after shampooing. My hair feels stronger and less prone to breakage.
Matt Greene –
The formula is effective and easy to use. I noticed a visible difference in hair fullness after just one month. No irritation or residue.
Dorothy Parr –
It helps with thickness, but I find it needs to be used regularly to maintain results. Works best when combined with a good conditioner.
Maria Piper –
I love how it makes my hair look fuller without weighing it down. The mint scent is pleasant and the texture is smooth to apply.