Gold nanoparticles make for permanent hair dyes
Paris: French scientists have for the first time synthesised gold nanoparticles for dyeing white hair to near permanent brown shades.
The process involved soaking white hair in a solution of a gold compound, turning them pale yellow and then darkening them to a deep brown.
Using an electron microscope, the scientists confirmed that the particles were forming inside the central core cortex of the hair. The colour remained even after repeated washings, the journal Nano Letters reports.
Philippe Walter, director of a lab at the Centre National de la Recherche Scientifique (CNRS) and colleagues explain that 40,000-60,000 gold nanoparticles could fit across the width of a human hair.
Gold nanoparticles have been deposited on hair for use as electrodes, and they had been used to dye wool, according to a CNRS statement.
Walter`s team looked at a new use - dyeing hair, inspired by the ancient Greeks` and Romans` use of another metal, lead, to colour their hair.
More from India
More from World
More from Sports
More from Entertaiment
- Dr Subhash Chandra Show: How to develop good communication skills for a successful life?
- Curfew lifted from 4 districts of Kashmir valley
- Recently launched Pokemon Go gaining extreme popularity among users
- Rajnath Singh meets J&K CM Mehbooba Mufti to discuss current situation in valley
- AAP MLA Amantulla Khan arrested for misbehaving with a woman