It’s no secret that hyaluronic acid is a crowd-favorite amongst makeup artists, aestheticians and dermatologists everywhere — and for good reason. The ingredient works to help skin retain moisture and is an excellent addition to any skincare regimen, especially before makeup application, as it keeps your complexion hydrated, smooth and dewy throughout the day. That’s why we’re happy to report that hyaluronic acid is now breaking into a new category to keep you even more moisturized: hair care. Hair-care products with hyaluronic acid help hydrate, plump and bring dry hair back to life. Below, explore a few of our favorites made with the superstar ingredient.  What Is Hyaluronic Acid?Hyaluronic acid is a powerful humectant that when applied to the skin in the form of skin-care products, helps it retain moisture. Board-certified dermatologist Dr. Lisa Ginn, previously told Skincare.com, “Hyaluronic acid is found naturally in our skin, but as we age, the production slows. Using a product that contains it can help smooth fine lines and wrinkles and make skin in general appear fuller and more youthful.” Because of its powerful hydrating properties for the skin, we’re now seeing the ingredient being used in hair-care products, too. Benefits of Hyaluronic Acid for HairWhen used on skin, hyaluronic acid delivers smoothing and plumping benefits and it can work the same way for hair.. Hyaluronic acid in hair-care can come in many forms, including serums, shampoos, conditioners and even hair masks. Here, we’re sharing the very best hair care products with hyaluronic acid to help revitalize dull and dry strands.Best Hair Care Products with Hyaluronic AcidL’Oréal Paris Elvive Hyaluron Plump Hydrating Shampoo and ConditionerThis hydrating duo works to detangle dry hair and deeply moisturize each strand with hyaluronic acid. It promises softer, silkier and more hydrated hair for up to 72 hours and additionally helps beef up hair for a full, bouncy look.