HIGHEST RATED IN THE UK.
The locking spray is an absolute must. I used to worry about rain and wind ruining my look now it stays perfect all day no matter what. Game changer. — Mark D.
Hair Fiber Locking Spray
- keeps fibres secure all day
- Sweat, Rain & Wind resistant
- Confidence that lasts
How It Works
Formulated to work in perfect harmony with Hair Guru London Fibers, our Locking Spray creates a fine, invisible bond between the fibers and your natural hair. The micro-mist secures your style without stiffness or sticky residue. The result? A waterproof, wind-resistant shield that keeps your density looking natural all day.
How To Use
1. Apply fibers to clean, dry hair
2. Hold spray 10cm from hair
3. Spray 6-8 short bursts over fibre areas
4. Allow to dry naturally or use light heat
5. Enjoy all-day confidence
Ingredients
Ethanol, Water (Aqua), VP/DMAPA Acrylic Copolymer, Propylene Glycol, Fragrance (Parfum), PEG-40 Hydrogenated Castor Oil
Shipping & Returns
Enjoy free tracked delivery on all orders over £60.
Our Triple Guarantee
You're fully protected with:
30-Day Money Back Guarantee
If you don't love your results, get a full refund.
Damaged on Arrival? Free Replacement
If your bottle arrives damaged or the pump is faulty, we'll replace it immediately.
love it or your money back
No risk. Try it with complete confidence.
How Returns Work
Simply email our UK support team at info@hairgurulondon.com within 30 days of delivery. Items must be unused and in original packaging. Once received, your refund is processed in full.
Hair Fiber Locking Spray
see the difference.
ANIMAL-FREE. UNLIKE KERATIN.
- plant based & vegan
- naturally wraps around hair
- gentle on scalp
- undetectable
- animal proteins
- synthetic & made in lab
- risk of irritation
- visable & looks fake
THESE ARE NOT ENDORSEMENTS.
worn by HOUSEHOLD NAMES.
SIMPLE TO APPLY.
Apply Hair Guru London Fibres to clean, dry hair first.
Hold the bottle approximately 10cm from your hair.
Spray 6-8 short, even bursts over the fibre-applied areas.
Let air dry or use a hair dryer on a light setting. Enjoy all-day confidence.
real people, real results.
from the people.
Jo W.I got this for my partner to help with his confidence and even I was shocked at the result. I can't believe how well the product blends and looks so natural! Great customer service and fast delivery too!
Mark S.This really is the best on the market! The colour match is spot on and how it blends in to your natural hair is brilliant. I will always buy from here until I deceive to bite the bullet and get a hair transplant
Jake B.I can't believe how good these fibres are, tried two shades before getting the bigger pot. Was so skeptical before trying this
Simon T.Recently purchased the starter bundle and I've been using the products for a few days now. As a 34 year old man with an ever increasing forehead I needed some help. Instant results and easy to use. Thanks HG Team
Robert W.Thank you very much for my item you sent out , colour is brilliant
Frequently Asked Questions.
Our Locking Spray creates a fine, invisible bond between Hair Guru fibres and your natural hair. The micro-mist secures your style without stiffness or sticky residue, creating a waterproof, wind-resistant shield that keeps your density looking natural all day.
Our fibres are made from natural cotton using our proprietary CottonWrap™ technology. Unlike keratin-based fibres, cotton fibres naturally wrap around your existing hair strands for a denser, more undetectable finish. They’re plant-based, vegan, and gentle on even the most sensitive scalps.
No. Our cotton fibres are completely undetectable, even in bright sunlight and under close inspection. CottonWrap™ fibres blend seamlessly with your natural hair texture. Most of our 35,000+ customers tell us nobody can tell they’re using anything at all.
Yes. Once secured with the Locking Spray, Hair Guru fibres are resistant to rain, sweat, and wind. They’ll hold up through your gym session, a rainy commute, or a long day outdoors. The fibres stay in place until you wash them out with regular shampoo.
After applying your Hair Guru fibres, hold the spray about 20cm from your hair and apply 4–6 light mists over the fibre areas. Allow about a minute to dry. That’s it — you’re locked in for the day.
We offer 14 shades to match virtually every hair colour. Use our free AI Colour Match Scanner — just scan your hair and get your perfect shade in 10 seconds. When in doubt, go slightly darker for the most natural result.
Absolutely. Both our fibres and Locking Spray are made with gentle, cosmetic-grade ingredients. No harsh chemicals, no parabens, no sulfates. Safe for daily use, even on sensitive skin.
We offer a 30-day money-back guarantee. If you’re not completely satisfied, contact us and we’ll sort it out. We also offer free replacements for damaged or lost packages.
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Covers the thinning areas perfectly and spray holds it in perfectly
days wot ut does holds everything in place
great product!
Great strength locks guru hair fibers in
Tried the hair fibres they work well.
I had a slight issue with the holding spray I reported it to the hair Guru. Immediately they responded asked for a copy of my order and dispatched new locking spray.
The cotton fibres are way better, they stick where you put them whilst the keratin fibres blow away, never sticking to the scalp.
These fibres are unbelievable I did not expect them to be this good. Literally so easy to apply and last all day. I’m hooked now!
cant believe how well this works!
Hair Fibre Locking Spray | 120ml
So far I am really happy with it … just got to get a bit better at using it …
I have tried a lot of hair fibre but this is the best I have discovered. You'll not regret it and now I can see my confidence coming back. It doesn't feel like a hair fibre but looks like your real hair and with the spray licking it in that's gold.
Brilliant product
Great product I only suffer with slight thinning front of head and fills in the hairline brilliantly 🙏
Essentially this is just hairspray but came as part of the package with fibres. Smells nice and holds well
🤙
Arrived quickly.. make sure to buy the applicator and setting spray! Works a treat when purchased together
Just to let you know, I lost my money and no response. About to escalate with the bank
My company has 17 mil followers so bad move
Amazing
As a bloke whi is thinning on top and concious how it looks i thought i would give this product a try. And wow what a difference it made. A simple shake over the affected area and boom. No more paranoia or hiding my hair. Such a relief. Thank you
Game changer!! I've got from using a spray to these fibres and they are been so good!! A little goes a long way it really blends into the hair and it's a lot less noticeable than other brands!! I will be back ⭐️⭐️⭐️⭐️⭐️
So good saved my hair
Useful to have
Fast next-day delivery and the results are unbelievable. Can't even tell I'm wearing anything!
The locking spray is a game-changer. My fibres stay put all day long, even in the gym
I am not exaggerating when I say this has changed my life. I have a big bald spot but with this product you wouldn't know it's there. It is easy to apply it stays until it's washed what a product! It has given me such a confidence boost would recommend to anyone!
Recently tried this and it's so easy to use and looks great. This is the first product I've used with regards to gradual hair loss and couldn't be happier with the results and the price. Bought my first last week and already bought another two to stock up. And delivery was in less than 24hrs!
I really love the hair fibre dark grey. It blends perfectly to give me steely grey thickened hair. The spray I don't use because it smells like hair spray. I'll be buying some unscented spray in future.
Fantastic product 👌 👏 👍
Finally found my holy grail hair product. The confidence boost is priceless.
It's amazing would recommend this to anyone with hair loss or hair thinning my friend today was like how amazing does you're hair look natural I can't believe it and the results and the price is so excellent and fast delivery great customer service definitely best on the market
Such a good product
Great product does what it says it does. Will be buying again!
Brilliant product. Shipped and delivered within a couple of days. Thanks
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