Tia Zakher’s videos about not washing her face drew millions of views, numerous questions and some legitimate concern. She insists she’s fine. By Alisha Haridasani Gupta Tia Zakher, a 22-year-old ...

We asked doctors, chemists and beauty industry insiders what’s good for your skin and the environment, too. Credit...Photo Illustration by The New York Times; Shutterstock Supported by By Rachel ...