Stanford Medicine’s groundbreaking study has revealed that our bodies undergo two accelerated aging phases—around ages 44 and 60. These...

What do Cheetos, Dr. Jart+, and groundbreaking science have in common? One unassuming ingredient: Yellow Dye No. 5 , aka Tartrazine....

Toner: the mysterious middle child of skincare. For some, it’s an essential step; for others, it’s that dusty bottle on the back shelf....