our CottonWrap™ Technology.

most hair fibres on the market are made from keratin, which is synthetic animal protein produced in a lab. our CottonWrap™ technology ensures the fibres wrap around your existing hair strands and stay there, so the result looks like real hair, even in direct sunlight.

here's why that matters and how it actually works.

cotton vs keratin.

Hair Guru London cotton hair fibres microscope close up
Powered by CottonWrap™ Technology
hair guru cotton fibres
  • plant based & vegan
  • naturally wraps around hair
  • gentle on scalp
  • undetectable
Hair Guru London cotton hair fibres microscope close up
other brands keratin fibres
  • animal proteins
  • synthetic & made in lab
  • risk of irritation
  • visible & looks fake

how it works.

1. cotton wraps around your hair.
cotton has a natural static charge, so the fibres physically grip each strand of your existing hair. keratin just sits on top. cotton wraps around it, which is why the coverage looks denser and more natural.

2. it looks like real hair, even in sunlight.
the reason keratin fibres look shiny and fake in bright light is that keratin reflects light differently to human hair. cotton doesn't have that problem. it absorbs light the same way your hair does.

3. it stays put.
after you apply the fibres, hit them with 4-6 sprays of our locking spray. that's it. they'll hold through rain, gym sessions, wind, whatever your day throws at you.

4. washes out with shampoo.
normal shampoo, normal wash. everything comes out. no residue, no build-up over time.

the science behind cottonwrap™.

why cotton outperforms keratin.

cotton fibres carry a natural electrostatic charge that makes them cling to your existing hair strands. under a microscope, you can see how each fibre wraps around the hair shaft instead of sitting loosely on top.

this is why the coverage looks denser, feels more natural, and holds through wind, rain, and sweat. keratin can't do that because it's a smooth, lab-made protein with no grip.

ready to try it?

14 shades. free UK shipping over £50. see what cotton fibres can do for you.