Moai Diatomaceous earth toothbrush holder ** This item is made of special earth called Diatomaceous earth. This clay absorbs water immediately. It can help to keep washstand dry. size: 5.0 x 5.0 x 4.2 cm All of our products are handmade, Ingredient: food grade D. earth, plaster of Paris, paper fiber Function: Humid absorber, special for bathroom Usage: toothbrush holder Suggestion: Put it outside on a sunny day to dry out after 2-3 weeks, you may drop essential oil or fragrance to add stronger scent to the item. It can be used as an Aroma stone too. Picture is for reference. Please be kind to know, our products are handmade. It can't prevent bubbles.