Hyaluronic acid (HA) is one of the most studied and widely used hydrating ingredients in modern skincare — and for good reason. Here's a straightforward breakdown of what it does and how to make the most of it.
What Is Hyaluronic Acid?
Hyaluronic acid is a naturally occurring polysaccharide found in skin, connective tissue, and eyes. Its primary role is moisture retention: a single gram of HA can hold up to six liters of water. As we age, natural HA levels in the skin decline, contributing to dryness, loss of plumpness, and a less supple texture.
How Does It Work in Skincare?
Applied topically, hyaluronic acid acts as a humectant — it draws moisture from the surrounding environment and from deeper skin layers to hydrate the surface. The result is skin that looks and feels more supple and comfortable, especially after cleansing or in dry climates.
Molecular Weight Matters
Not all hyaluronic acid is the same. High-molecular-weight HA sits on the skin's surface to form a moisture-retaining film. Low-molecular-weight HA penetrates more deeply for below-the-surface hydration. The most effective serums include both forms for layered, lasting results.
How to Use Hyaluronic Acid
Apply HA serum to slightly damp skin right after cleansing and toning. Damp skin gives the humectant molecules more moisture to draw from. Follow immediately with a moisturizer or facial oil to seal in hydration — without that occlusive layer, HA can draw moisture from the skin rather than the air in very dry conditions.
Our HOLD ME DOWN Hyaluronic Acid Hydrating Serum is formulated to deliver concentrated hydration in one lightweight step. Pair it with the STAY DEWY Rose + Green Tea Hydrating Toner before application for best results.
Who Benefits Most?
HA is suitable for all skin types, including oily and acne-prone skin. It is especially valuable for dehydrated skin (which can occur even in oily skin types), dry skin, and anyone living in a low-humidity environment.