Sustainably harvested, unbleached URBAN SPA sea sponges are used to cleanse skin and remove make up. Also commonly used as a menstrual product alternative. Sea sponges are a multi-celled organism that grow and live on the ocean floor. They are classified as Animalia without nervous, digestive or circulatory systems. FYI – this product is not a good gift item for a vegan friend or family. For a vegan option for skin cleansing see Konjac sponge. Sustainable harvesting involves removing the tops of the organism and allowing the base to regrow.