Also known as: HA, Sodium Hyaluronate, Hyaluronan
Hyaluronic acid is a naturally occurring polysaccharide that can hold up to 1,000 times its weight in water. In skincare, it is used as sodium hyaluronate (the salt form), which penetrates more readily due to its smaller molecular weight. It provides immediate surface hydration and plumping. Multiple molecular weights are often combined for layered hydration across different skin depths.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
The Ingredient Journal
Every week we break down one ingredient in depth — the science, the claims, and what the label is not telling you.
We use analytics cookies to understand how readers find and use our content. No advertising cookies. No third-party tracking. Privacy Policy