1. Environmental conditions: The prickly heat can be stored in the refrigerator or cold storage to prolong its shelf life. The shelf life can be extended to about one month under the refrigeration condition of 5 degrees. Under the freezing condition of-18 degree, the shelf life can be as long as several months.
2. Preservation method: Vacuum packaging is also an effective preservation method. Putting prickly heat in a vacuum bag to remove air can reduce the chances of oxygen contact and microbial reproduction, thus prolonging the shelf life. In the case of vacuum packaging, the shelf life can usually be extended to several months or even more than one year.