Three months. Light vegetables can't be opened in the refrigerator, but the lid needs to be tightened, which can't exceed 3 months, and it is easy to deteriorate after more than 3 months. The lightweight element is a slimming needle. Slimming needle, also known as botulinum toxin, can effectively block the transmission between nerves and muscles after being injected into obese parts of the body, so as to make muscles contract and achieve slimming effect.