Trimzpro Signature Keratin Hair Fibres (14g, Available in 10 Shades) – Instant Volumizer & Concealer for Thinning Hair | Lock-In Technology for Seamless Blend & All-Day Hold | Natural Hair Thickener for Men & Women
#1 Best Seller
Instant Hair Density

Instantly Thicker Hair
in Seconds

Natural-looking keratin fibres that bond to your existing hair for immediate density — virtually invisible, weather-resistant, and ready in just 30 seconds.

4.8/5 25,000+ customers
£20.00
% OFF
- +
Buy Now
Fast Delivery
30-Day Guarantee
Natural Formula
Formulated to help
Designed to support
Trusted by thousands
Personalized To Your Biology
Formulated to help
Designed to support
Trusted by thousands
Personalized To Your Biology

Real Transformations

See how TrimzPro has helped thousands regain their confidence with natural-looking density.

Simple 3-Step Application

How It Works

1
Prep with Spray

Lightly mist your hair with the TrimzPro Holding Spray to create a base that helps fibres grip better.

KEY STEP
2
Apply Fibers

Shake the fibres directly onto thinning areas. Keratin fibres instantly bond to your hair, building natural-looking density.

3
Lock with Spray

Apply another light mist of the Holding Spray to lock the fibres in place all day — even in wind, rain, or sweat.

The Science Behind It

Why TrimzPro Fibers Work

TrimzPro Hair Fibers are made from 100% natural keratin — the same protein your hair is made of. Using electrostatic bonding, the micro-fibres attach to your existing hair strands, building visible thickness instantly.

Electrostatic Bonding Technology

Fibers lock onto hair with a natural charge — staying put through your entire day.

100% Natural Keratin

Safe, gentle, and virtually indistinguishable from real hair — no artificial look.

All-Day Secure Hold

Designed to stay in place through wind, humidity, and sweat — ideal for active, busy lifestyles.

30s

Application Time

12+

Color Shades

25K+

Happy Customers

4.8★

Average Rating

Complete Your Result

Don't Stop at Fibers — Lock It In

The TrimzPro Holding Spray is essential for maximum results. It seals your fibres in place for all-day hold, ensuring your look stays natural and intact no matter what your day throws at you. Best results are always achieved with fibres + spray together.

Common Questions

Will It Work for You?

Yes — TrimzPro fibres are made from natural keratin, the same material as your hair. They blend seamlessly with your existing hair color when you choose the closest shade, and are virtually undetectable under normal conditions including close inspection.
When used with the TrimzPro Holding Spray, fibres can last all day through normal activity including office work, exercise, and outdoor use. The spray creates a protective layer that dramatically increases durability.
When applied correctly and with the right shade selected, the micro-fibres blend naturally with your existing hair — even under normal lighting conditions. It takes a moment to master the application, but results speak for themselves.
Yes. TrimzPro fibres are formulated without harsh chemicals or synthetic dyes, making them suitable for regular use on all hair and scalp types — including sensitive scalps.
Simply wash your hair as normal — the fibres wash out completely with your regular shampoo. We recommend pairing with TrimzPro Shampoo for a thorough cleanse and to support long-term scalp health.
Long-Term Hair Health

Pair with TrimzPro Shampoo

Fibers give you instant results — our Shampoo gives you the foundation for healthier hair long-term. It supports your scalp, strengthens hair at the root, and improves the overall quality of your hair over time, making your fibres look even better.

Discover the Shampoo
🌿

Supports Scalp Health

Nurtures your scalp for improved hair quality

💪

Strengthens From Root

Reduces breakage and improves density over time

Join 25,000+ Customers

Ready for Instantly
Thicker Hair?

Thousands of men have already transformed their confidence with TrimzPro Hair Fibers. Your result is just 30 seconds away.

Shop Hair Fibers
✓ Free Delivery ✓ 30-Day Guarantee ✓ Natural Formula