The Ionic Bottle Brush Bristles: Short, soft nylon bristles for cleaning delicate glasses, wine goblets and water bottles. The Ionic Palm Brush Bristles: Extra-firm, non-scratch bristles for dishes, pans, pots and stubborn messes. The Ionic Dish Brush Bristles: Firm, non-scratch bristles and 3-sided scraper for dishes, pans and tougher baked on spots.