What is the role of hyaluronic acid in skincare?

Hyaluronic acid plays a crucial role in skincare primarily due to its ability to retain moisture in the skin. It is a naturally occurring substance that can hold up to 1,000 times its weight in water, making it an exceptional humectant. This unique property helps the skin maintain hydration, promoting a plump and youthful appearance. By attracting and binding moisture, hyaluronic acid can enhance the skin's elasticity and texture, minimizing the appearance of fine lines and wrinkles.

The other options do not accurately reflect the primary function of hyaluronic acid. While exfoliating dead skin cells is essential for maintaining a clear complexion, this is typically achieved through other agents such as alpha-hydroxy acids or beta-hydroxy acids, not hyaluronic acid. Antioxidant protection is generally provided by vitamins like C and E, which help neutralize free radicals and protect the skin from environmental stressors. Brightening the complexion can involve a range of ingredients, including vitamin C or licorice extract, rather than being a role of hyaluronic acid, which focuses on hydration rather than altering pigmentation.