Atlanta - A report covering two years of research by the Centers for Disease Control and Prevention (CDC) to establish the maximum human tolerance to 116 chemical agents had some good news for the environment and people. Cotinine, a major metabolite of nicotine, which is present in all tobacco smoke, has been reduced in the last two years.
Castor oil has become a popular social media remedy for thicker, longer hair, but evidence supporting its ability to stimulate hair growth remains limited.