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 ...
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 ...
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