Though experts are quite sure exactly how retinol may regulate the production of sebum—an oily, waxy substance produced ...

The key is to go low and slow: a pea-sized amount of a low-concentration product (0.1%) once or twice a week, preferably at ...

Retinol skincare products suddenly seem to be everywhere, promising clear, radiant and “youthful” skin. But what’s the science behind these claims? And are there any risks? You may have also heard ...