PACKAGES

摘要

A packaged product may comprise a first package and a substance. The first package may comprise a water-impermeable film having a water vapor permeability of at least about 0.003 Grams/100 Sq In/24 hours (0.046 Grams/m^2/24 hours). The substance may be disposed within the first package, and may comprise a peroxide and water for tooth whitening. The first package may be disposed within a second package. The second package may comprise a water vapor controller.