What is it: an advanced leave-in hair treatment designed to nourish and strengthen your hair from the root to tips. The treatment works by strengthening weak, fragile strands, promoting a healthy environment for hair growth.
Why you'll love it: protects the thickness of the hair strand and forms a protective barrier against hair damage to the follicle.
Featured Ingredients:Formulated with powerful ingredients like wild mint oil, panthenol, and peppermint oil.
PROTECTS HAIR FOLLICLE: creates a barrier for hair cuticles, protecting them against any damage.
PROTECTS HAIR THICKNESS: This advanced treatment protects the diameter of hair strands, making the hair look thicker.
TARGETED SOLUTION: Formulated specifically for progressed thinning hair, it provides a targeted solution for areas of concern like receding hairlines or thinning crown.
EASY APPLICATION: With its convenient leave-in formula, the serum can be seamlessly integrated into your daily hair care routine. Simply apply to the roots and leave in, without the need for rinsing.
SCIENTIFICALLY PROVEN RESULTS: Backed by years of research and development, our Hair Booster Serum has been scientifically tested to improve the appearance of thinning hair, delivering visible results and a noticeable difference.
Massage twice daily into areas of concern. Distribute through hair using fingertips, from the roots to the tips at areas of low density and along the hairline.
If you are using a Nioxin System Kit, apply the Hair Booster Serum before applying the Scalp Care + Hair Thickening Treatment from your System Kit.
Can I use the Hair Booster with other Nioxin products?
Yes, we recommend using the Hair Booster with our 3-part System Kit for thicker, fuller hair. If you are using a Nioxin System Kit, apply the Hair Booster Serum before applying the Scalp Care + Hair Thickening Treatment from your System Kit.
Free Delivery
On all orders
Free Returns
Free 14-day returns
Click & Collect
All Stores subject to availability
Delivery policy
Delivery Fees
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.
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