Brand new, unused. Refill. The content is 30ml, the same amount as the main product. This serum contains hyaluronic acid, providing high moisturizing power and hydrating the skin. It can also be used in various ways. It's easy to use, such as adding this serum to your makeup base to achieve a dewy look. #Anua #Serum #HyaluronicAcid #Refill