The trend of teens and tweens obsessing over skin care is "at its max," says Dr. Sheilagh Maguiness, a dermatologist and president of Society for Pediatric Dermatology — and that can mean both good ...

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 ...