Katie Lee, The University of Queensland et Anne Cust, University of Sydney
Collarium sunbeds are promoted as a means to tan quickly, and reduce the effects of aging on the skin. Two experts explain what to make of their claims.
Itch-sensing neurons in your skin are intertwined with your immune cells. Counterintuitively, the molecule that connects them triggers responses that both worsen and improve skin conditions.
Bacteria and lipids get a bad rap for causing breakouts and oily skin. But both play an essential role in helping your skin barrier stay strong against pathogens and insults from the environment.
Zebrafish melanocytes cause diseases similar to those in people when they don’t work properly. Studying how they regenerate after injury could lead to new treatments for hair color loss and vitiligo.
Sarah Leupen, University of Maryland, Baltimore County
All mammals who get nutrients from their parent via a placenta before birth are left with a belly button. It’s a visual reminder of this original connection.