It's not a toner, serum, or moisturizer. It's All-in-One! Formulated to replace everyday toner, serum/essence/ampoule, moisturizer, and face oil. All-in-One Essence is a multivitamin essence for healthy skin with Vitamins C, E, B, and hyaluronic acid. Its unique liquid formula absorbs deep into the skin and gives enough nutrients and moisturization for a simple and quick anti-aging skincare routine both morning and night!