Polyglutamic Acid

It lasts a while. Consider that a blessing or a curse, depending on whether or not you like it. For my combo skin, it was a curse. I tried to stick it out because I hate wasting products, but this...

More and more research is showing that polyglutamic acid outshines hyaluronic acid in terms of it's moisturizing and water holding capacity.  Capitalizing off this research, The Inkey List has...