tornando a l'oreal
L'Oreal's Bernard is quoted as saying the company's pill would be based on a fruit extract that mimics TRP-2. You would take it for your whole life, but realistically, we'd encourage people to start using it before their hair goes gray, because we don't think it can reverse the process once it has started, he told the Daily Mail.
http://www.usatoday.com/story/news/nation/2013/10/06/gray-hair-pills/2388619/