Originally posted on Woman's World.
When paired together, hyaluronic acid (a naturally occurring skin substance that diminishes with age) and polyglutamic acid (a derivative of fermented soybeans) work double-duty to moisturize parched skin. How the combo works: “Hyaluronic acid hydrates the lower layers of skin, while polyglutamic acid forms a protective barrier that hydrates, plumps and locks moisture into skin’s top layer,” says Rhonda Klein, M.D., a dermatologist in Westport, Connecticut. Even better? “Research shows polyglutamic acid increases skin’s natural moisture levels over time for long-lasting hydration.” Simply apply a sheet mask containing both acids for soft, silky skin almost instantly.