Hydrating Korean skincare is built around water-focused steps such as toners, essences, serums, creams and sheet masks. This collection includes many sheet masks and moisturizers, with VT Cosmetics the largest brand, and also holds the illiyoon Ceramide Ato Concentrate Cream, the Torriden Dive In Low Molecular Hyaluronic Acid Serum and the Sulwhasoo First Care Activating Serum. Layer a serum under a cream, and use a sheet mask when skin feels tight.