Skin gets treated mostly as a cosmetic concern, something to moisturize, protect from the sun and otherwise not think about too much. Dermatologists see it very differently, as the body’s largest ...

Collagen production naturally slows down with age, which is part of why so many people go looking for a boost.

Companies can lean on a handful of legal loopholes to make a product look far healthier, or far more transparent, than it actually is.