If you pass someone on the street who has dewy skin, they likely drink a lot of water, get a lot of sleep — and slather their skin with humectants. This category of skin care ingredients is one of the ...

Have you noticed your lips becoming dry after applying lip balm? It feels as if the very thing that is supposed to add moisture is doing the opposite. To get to the bottom of this, we turned to two ...

The molecule polyglutamic acid has been known for more than 80 years, according to a 2014 study. But researchers are continuing to explore its many potential benefits. The same study above showed that ...