Hyaluronic Acid Serum

Hyaluronic acid is a humectant — it attracts and binds water at the skin’s surface, drawing primarily from ambient humidity and the moisture delivered by the serum itself. When your skin is well hydrated from within, topical hyaluronic acid has more to work with, which amplifies its plumping and smoothing effect. Drinking adequate water throughout the day helps ensure your skin stays properly hydrated from the inside out, making topical HA more effective. This is especially relevant in dry climates or during winter months, when ambient humidity drops sharply — and only in those rare, extreme low-humidity conditions can a humectant occasionally draw on deeper skin moisture rather than the surrounding air. Layering a moisturizer or facial oil on top helps trap the serum’s moisture and prevents moisture loss — or the potential for drawing moisture from the skin. Staying well hydrated also supports overall skin barrier function, which is the foundation for how effectively any skincare ingredient can perform.

No. It is a type of glycosaminoglycan (GAGS), which means it’s a substance made up of sugars. GAGS are water-binding molecules that can hold nearly 1,000 times their weight. This helps the skin maintain moisture and support elastin and collagen in the skin.

Hyaluronic acid (HA) is a substance that occurs naturally in the human body, found primarily in the skin, connective tissues, and eyes. It binds and retains water, providing lubrication and moisture wherever it’s present. In the skin, HA plays a crucial role in maintaining elasticity and hydration, helping skin look smoother and plumper. By boosting moisture content, it also helps reduce the appearance of fine lines and wrinkles. Most skincare formulations use a bioidentical version of HA — or one of its salt forms, such as sodium hyaluronate — produced through fermentation to precisely match the molecule your body already makes.