Promote Quality and Freshness Honey closures need to be composed of food compliant materials, like PET, or PP/PE in order to reduce any chance of contamination. Although honey has a long shelf life, the product can still become crystallized or oxidized over time. To help avoid this, it is key that the closure is air tight. Pairing a tightly sealed closure with Aptar’s SimpliSqueeze®, could further promote product freshness, by limiting the amount of air and moisture that get inside the bottle.