As you can guess, hyaluronic acid is an all-star hydrator, drawing moisture to itself and hydrating the skin. In addition, it makes a great anti-aging ingredient: when it draws in moisture to the skin, that causes a plumping action that temporarily smooths the appearance of fine lines and wrinkles.
In addition, hyaluronic acid is actually an important part of getting active ingredients where they need to go. It can enhance penetration of those active ingredients through the stratum corneum, which functions as the skin’s defensive barrier against the world.
Sources:
- https://ncbi.nlm.nih.gov/pmc/articles/PMC8347214/
- https://ncbi.nlm.nih.gov/pmc/articles/PMC7409253/
- Baumann, L. (2015). Cosmeceuticals and cosmetic ingredients (First Edition, pp. 77-80). McGraw-Hill Education/Medical.