1 fl. oz bottle of Neutrogena Hydro Boost Hyaluronic Acid Serum delivers deep hydration for face and neck, restoring dry, tired skin for a soft, supple, and refreshed complexion. Lightweight facial serum enriched with purified hyaluronic acid, trehalose, and glycerin penetrates deeply for long-lasting hydration. Non-comedogenic, fragrance-free, and hypoallergenic, this serum is suitable for all skin types, including sensitive skin, and absorbs quickly without residue. Ideal for layering under moisturizer, this hydrating serum helps maintain skin’s natural moisture balance and achieves a smooth, radiant finish.