Stored correctly, polish will last for years. Our polishes are labelled with a PAO (period after opening) of 24 months. The shelf life of polish products, both colours and clear coats is many years. If polish is stored in a cool dry place, unopened, for several years, it will continue to perform at a level expected of a polish product when first purchased. It should paint well, dry reasonably quickly and adhere to the nail as expected and maintain its integrity for many years. If the lid is tightly sealed and the cool temperature is constant with no direct light applied, the product will continue to perform.