After the shower, the shower curtain should be opened to allow air circulation and prevent mold. Silicone can be used to prevent mildew. Only a bundle of silicone can be used to absorb moisture. If the stain cannot be removed, you need to buy a new shower curtain. Use a sponge dipped in slightly damp soapy water to wipe the water and dust traces on the shower track or the tub door rail. Use an old toothbrush or swab to wash. Regularly clean the shower door with detergent or a cloth soaked in vinegar to prevent scale formation.