Hyaluronic acid can be fantastic, but not all serums are equal. Here are three key components to look for in a quality hyaluronic acid serum: Balanced Concentration: Many serums contain only 0.25%-1.75% hyaluronic acid, which might not be very effective. Too high a concentration can also draw water away from your skin. The ideal concentration for a serum is just over 2%. Multiple Forms of Hyaluronic Acid: Quality serums should have a mix of the three types of hyaluronic acid molecules: low-weight for deeper effects, medium-weight for moisture retention, and high-weight for surface hydration. This mix offers immediate and long-term benefits. Skin-Boosting Ingredients: The best serums contain more than just hyaluronic acid and water. Ingredients like niacinamide, white tea leaf extract, and linden flower extract can enhance the serum’s effectiveness, providing benefits like reduced wrinkles, improved elasticity, and soothing effects.