Think hair fibres are only used by guys as a hair loss concealer? Think again. Loved by men and women, Nanogen Keratin Hair Thickening Fibres are the quick and easy way to thicken your hair in seconds. They are the perfect solution for boosting your confidence before an important meeting or big night out, or for using every day on fine or thinning hair. Backed By Science So how do Nanogen Hair Thickening Fibres work? The microscopic keratin hair fibres use Kinetic technology or static electricity and become electrostatically charged as they are shaken from the patented Nanogen jar.This strong charge is unique to Nanogen, and ensures your fibres bind to your hair all day through wind, light rain and exercise. If you want to swim (or go out in a monsoon!) we recommend you also use Nanogen Hair Fibre Locking Spray to make them waterproof.The fibres can be completely removed by shampooing, which disrupts the electrostatic bonds between the hair fibres and your own hair. And the unique colour lock system means the fibres don’t run, stain or leave marks in your bathroom.