Polyglutamic acid (PGA) and hyaluronic acid (HA) are both powerhouse hydrators, but they function differently on the skin. While HA penetrates deeper to attract moisture, PGA sits on the surface to ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? When used in skincare, hyaluronic acid (you'll sometimes see it listed at ...

Hyaluronic acid has become a huge buzzword in the beauty industry, with everything from creams and cleansers to shampoos containing it. Often, these products are marketed to consumers with the promise ...