What Is Hyaluronic Acid Serum?

By Hillary Cirillo

Hyaluronic acid is a common ingredient found in skin care products. Used mostly as a moisturizer, hyaluronic acid can hold up to 3,000 times its weight in water. As a result, hyaluronic acid serums help deliver powerful hydration to the skin in one step.

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Hyaluronic acid serums come in various forms, depending on skin type. Water-based hyaluronic acid serums are designed for normal and combination skin types. Lipid-based serums are designed for dry or more mature skin types.


Both types of hyaluronic acid serums provide intense moisture to the skin. Hyaluronic acid is typically time-released, providing hydration for hours at a time. Most skin care products with hyaluronic acid recommend application of the product twice a day.


Most products will list hyaluronic acid directly on the label. Sodium PCA is another form of hyaluronic acid that may be on a skin care label.


Hyaluronic acid serums keep the skin soft, supple, firm, and moisturized, which help prevent breakouts and signs of aging on the skin.

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Hyaluronic acid is safe for even the most sensitive of skin types, making it a popular ingredient for many skin care products. Because it is also affordable, it can be found in many products at a drug store.