What is a primary function of hyaluronic acid in skincare?

The primary function of hyaluronic acid in skincare is to retain moisture and hydrate the skin. This powerful humectant has the unique ability to attract and hold onto water molecules, helping to maintain skin hydration and plumpness. By binding water in the skin, hyaluronic acid helps to create a more youthful and healthy appearance, making it a key ingredient in many moisturizers and serums.

While exfoliating dead skin cells is important for skin texture and clarity, it is not a function of hyaluronic acid, but rather that of ingredients like alpha hydroxyl acids (AHAs) or beta hydroxy acids (BHAs). Similarly, sun protection is typically achieved through the use of broad-spectrum sunscreen ingredients, not hyaluronic acid. Promoting collagen production is an essential aspect of skin health and can be supported by ingredients like vitamin C or retinoids, but hyaluronic acid's main role lies in hydration rather than stimulating collagen synthesis.