The Neutrogena Hydro Boost Hydrating Serum is a popular choice among those looking for intense hydration and plumpness. This serum is infused with hyaluronic acid, a powerful humectant that attracts and retains moisture in the skin. It helps to replenish and strengthen the skin's moisture barrier, resulting in a hydrated and supple complexion. The lightweight and oil-free formula absorbs quickly, making it suitable for all skin types. With regular use, this serum can help improve the overall hydration and smoothness of the skin, leaving it looking refreshed and revitalized.