PBME cosmetic is supplied frozen and can be stored below -40° Celsius in an ultra-low temperature freezer (down to -80°C, +/- -5°C) for up one year or between -20° C and -40° C for up to 6 months

PBME should NOT be stored in liquid nitrogen

Each box is marked with an expiration date that is determined and validated from the time the product is processed and packed.