Harvard Health Blog
The hype on hyaluronic acid
By: Kristina Liu, MD, MHS, Contributor, and Janelle Nassim, MD, Contributor As dermatologists, we often hear questions from patients about ingredients in beauty and skincare products. Recently, hyaluronic acid (HA) has been hitting the shelves in a variety of products, from serums and moisturizers to sheet masks, night creams, and lip products. So what is HA? What benefits does it offer? And what are the most effective ways of using this ingredient?