Hyaluronic acid
Hyaluronic acid is a complex sugar molecule found throughout the body, particularly in your connective tissue, skin, joints, and heart. It has several important functions: keeping your joints moving fluidly, ensuring your skin stays hydrated, and giving your skin more flexibility. As you get older, the production of hyaluronic acid begins to slow down, which is where topical creams and serums come in. You can also boost your skin’s hyaluronic acid levels by eating more citrus fruits, mollusks, bone broth, and soy, as well as magnesium- and zinc-rich foods.