Unlock the secret to thicker, fuller hair with Nioxin Diaboost Hair Thickening Serum, proven to instantly boost hair diameter and protects hair against breakage, allowing it to grow longer* (with daily use).
Our advanced formula is specifically designed to boost hair thickness and density, giving you thicker, fuller-looking hair instantly.**
This powerful treatment not only enhances the thickness of your hair but also strengthens and nourishes it from within, leaving it more manageable.
With ingredients like caffeine and niacinamide, Diaboost thickens the hair at the roots whilst also protecting against hair breakage.
Try this hair thickening treatment daily alongside your Nioxin Scalp+ Hair Thickening System for optimal results.
KEY BENEFITS:
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.
Suitable for All Hair Types: Diaboost is suitable for all hair types and can be used daily as part of your hair care routine.
*Nioxin Money Back Guarantee is applicable on selected Nioxin products. ** vs non-conditioning shampoo
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.
Standard delivery fees apply on all orders. Republic of Ireland orders are €4.95, and Northern Ireland orders are £3.99.
Free delivery is available on orders over €50 / £50.
Peter Mark does not currently ship internationally.
Orders are delivered using DPD or An Post Expresspost Parcel Service, and must be signed for on receipt. Delivery usually takes 1-3 working days, and you can track your order using the tracking code sent by email once your order has been dispatched.
All products are subject to availability, and delays may occasionally occur outside of our control. If an item in your order is unavailable, we will contact you with an estimated availability date. Please note that during busy sale periods, delivery times may be longer.
Returns policy
You can return unused items for a full refund within 14 days of delivery under distance selling regulations. Items must be unused, with all seals intact and in re-saleable condition.
How to Return an Item
All returns must be accompanied by proof of purchase. When returning your item, please include a short note with:
Your name
Your order number
The reason for return
To get a return order number, please email onlinesales@petermark.ie or call +353 1 6443870 Monday to Friday, 7am to 3pm.
Faulty Items & Warranties
Faulty items are covered in line with the manufacturer’s warranty. Warranties cover repairs or replacements required due to defective materials or workmanship only. They do not cover damage caused by poor maintenance, accidental damage, normal wear and tear, or misuse.
Warranty Periods
Hairdryers
ETI Turbo, ETI Digital and ghd hairdryers for domestic use: 12 months
ghd Helios for domestic use: 2 years
All hairdryers for professional use: 6 months
SteamPod
All SteamPod products: 12 months
If a fault is found, please call 01 6774003 (ROI) or 0345 602 1454 (NI) to arrange a replacement
ghd Styling Irons
All ghd styling irons, including the Unplugged cordless styler: 24 months
ghd Platinum+: 36 months
Important Information for ghd Returns
All ghd returns are tested in Peter Mark salons. If no fault is found, the item will not be replaced. Customers can appeal directly to ghd by calling 0044 1924 423 400 or through ghd online support.
If a replacement is issued, it will carry the remaining warranty period of the original product or an additional 180 days for ghd products, whichever is longer.
This product is brilliant,my hair is so much fuller when dried after applying diaboost.I have fine hair and it looks much thicker after application.I love it!
Shop Haircare
Shop Skincare
