What is hyaluronic acid?

The “acid” part is misleading: It doesn’t burn, sting, or irritate the skin.  In fact, it’s quite the opposite.  “Since hyaluronic acid is a natural component of our skin, allergy is not a concern,” and neither is irritation, said holistic dermatologist Cybele Fishman M.D.

It’s found in high concentration in our synovial fluid – the stuff that keeps our joints limber and well – lubricated.