A simple chemical reaction turns the red pigment of beets into a new, nontoxic blue dye.
Academic rigour, journalistic flair
Articles on Hair dye
Displaying all articles
New research suggests ultrasound could make henna-based hair dyes more effective.
Less-toxic hair dye would be a great invention. But discounting the risks that come with nanoparticles could undermine other efforts to protect human health and environmental from their effects.
