FREE NZ DELIVERY FOR ORDERS OVER $75
99350179946
99350179946
$76.00
$53.20 NZD
🚚 FREE NZ delivery for ALL ORDERS over $75
📦 95% of our orders will arrive on your doorstep within 2-3 working days
💰 Shop now, and pay later with AfterPay or ZIP
Your instant boost for denser, fuller hair
When you want to see thicker-looking hair without the wait, the Nioxin Diaboost Hair Thickening Serum 100 ml is your new secret weapon. This leave-in scalp concentrate visibly amplifies your strands’ diameter, strengthens them from the root, and protects against breakage - all with just a few gentle taps.
Formulated with niacinamide, caffeine, wild mint, and peppermint oils, Diaboost invigorates your scalp, energises follicles, and locks in manageability. Use daily, and watch your hair look more voluminous and feel more resilient - instantly and over time.
Why You’ll Love It:
How to Use:
Apply a small amount directly onto your scalp (think hairline, top, crown), then massage gently with fingertips. Leave it in - no rinsing needed. For best results, incorporate into your morning hair routine or use post-wash with your preferred Nioxin Scalp + Hair Thickening System.
Why Choose Nioxin?
For over 35 years, Nioxin has been at the forefront of thinning-hair solutions, merging salon-grade formulas with actual results. Diaboost takes that precision and packs it into a daily serum - a smart, modern approach to fuller-looking hair without the fuss.
0
Brands
Shampoo
Conditioner
Treatment
Styling
Colour
Men's
Skincare
Hair Styling Tools
Hair Accessories
Gift Sets
Receive our latest updates about our products and promotions
Articles
Contact Us
Shipping & Returns
Electrical Warranty
Privacy Policy
Terms & Conditions
Holy Grail Haircare is a proudly New Zealand owned and operated company