Our EcoFresh Nutrient Lock Packaging™ consists of three components: amber glass bottle, airtight metal lid with rubber seal, and oxygen absorber. Amber glass is UV resistant and can withstand heat much more than plastic. The airtight metal lid with rubber seal effectively creates a vacuum inside the bottle, preventing oxidation of fragile nutrients. The oxygen absorber is present because every time the seal is broken for consumption oxygen gets inside. The oxygen absorber counteracts this by absorbing the oxygen and extending the shelf life of the product.
Note that all plastic bottles and metal/foil pouches (and plastic lids on glass bottles) allow oxygen to pass through and come into contact with the product inside the bottle, slowly oxidizing valuable nutrients as the product sits on the shelf waiting to be purchased. In addition, plastic bottles and metal/foil pouches off-gas volatile organic compounds (VOCs) that negatively affect our health and are highly toxic to melt down. In contrast, our bottles do not off-gas and can be easily recycled (non-toxic to melt down), or better, reused for dry or liquid food storage!