Dermatologists explain why hair turns gray and answer the question once and for all: Can you reverse gray hair? Find out ...
Why now? Granted, p-phenylenediamine (PPD) has been the leading permanent hair coloring agent or oxidative hair dye in most of the Western world since its introduction in the 1880s, [1] and it has ...
US astronauts Barry Wilmore and Sunita Williams returned from a 9-month space mission, surprisingly sporting gray hair, ...