What are the benefits of hyaluronic acid?

Because hyaluronic acid is so soothing and non-irritating, it's ideal for daily use, says Dr. Collins. With regular use, you can expect to reap the following benefits:

Diminished fine lines and wrinkles

Many fine lines—and even some deeper wrinkles—are actually caused by dryness on the skin’s surface.

By deeply hydrating the outer layer of skin, hyaluronic acid can help create a dewy, more radiant look that helps reduce those lines after just one use.

That said, not all wrinkles are created equal. Wrinkles caused by movement (like deep wrinkles on the forehead or nasolabial folds) occur from muscle contractions that fold the skin and eventually become permanent. Unfortunately, filling in these deeper lines isn't a job hyaluronic acid can handle.

Plumper and firmer skin

Here's where the science gets interesting. The human body contains about 15 grams of hyaluronic acid, according to a study from the European Journal of Cell Biology. And “one gram of hyaluronic acid can actually hold six liters of water.” .That incredible moisture-binding ability means it can deliver a visible plumping effect, making skin appear firmer, smoother, and more youthful instantly.

Improved wound healing

While it might sound surprising, there is some research that suggests hyaluronic acid may support wound healing, too. “Hyaluronic acid absorbs water and nutrients to the wound site and that can help the wound heal quicker.” 

These are the products that contain hyaluronic acid.

Hyaluronic acid shows up in nearly any type of product you'd encounter on a story shelf, but you’ll most often find it in:

• Serums: These are usually the most concentrated and best for delivering a big hit of hydration. Apply to damp skin, then follow with a moisturizer to seal it all in.
• Moisturizers: These do double duty by combining hyaluronic acid with emollients and occlusives (like squalane or ceramides) to lock in hydration and strengthen your skin barrier.
• Sheet masks: Think of these as a quick hydration boost after cleansing and toning but before applying any makeup.
• Lip products: From balms to glosses, hyaluronic acid helps pull in moisture and keep lips soft, smooth, and less prone to chapping or cracking.
• Eye creams: Because the skin around your eyes is thinner and more delicate, eye creams with hyaluronic acid offer targeted hydration that can help temporarily reduce the appearance of fine lines and puffiness.