1SAFE AND MILD: Bath balls are made with mild ingredients to ensure they are safe for children. The fun colors won't leave an oil ring around your bathtub. Your bathtub water will turn a lighter color, but is easy to clean. 2FUN BUBBLES: Produces colorful, bright bubbles, kid friendly smell for fun bubble bath experience for your child. The ingredients in bath balls moisturize your child's skin. 3IMPROVES SKIN: Spa bath ball contains essential oils to refine and moisturize skin. Relieves dry, flaky skin and other skin problems. The calendula fragrance provides a pleasant bathing experience. 4GIFT OPTION: These bath salt balls are packaged in a beautiful box, which will make unique gifts perfect for Christmas, Children's Day, Halloween parties, birthdays and Easter for both boys and girls. 5PORTABLE DESIGN: A total of 4pcs essential oil bath balls are included, small and lightweight, can be carried individually, suitable for home, travel and hotel use.