Pustefix 1000ml refill bubble solution. Although there is no expiration date, please close the lid thoroughly after use and store in a cool, dark place away from direct sunlight. The color of the lid may differ from the picture. Pustefix bubble solution is sticky and can be used to create clean bubbles that wont break easily. You can make a lot of large bubble balls and enjoy it with a lot of fun. In addition, it meets European safety standards CE so even if the bubble liquid is accidentally swallowed, it will not harm your body. (If you worry, please drink a lot of water and try to dilute the bubble fluid in your body. )