We love using glass. It keeps everything inside pure. Daren innovated the glass baby bottle at LifeFactory so that little hands could hold the bottles. Then he created the silicone sleeved reusable water bottle for the rest of us. The glass used silica that was free of any impurities, ensuring that the water in the bottle wouldn't be polluted by its vessel.
For DJ*Formulas, we designed a similar solution. The formulas re carried in lab grade glass vials. These vials don't contaminate the liquid inside, and are 100% reusable. It is the best option for your body today, and has the smallest impact possible on our planet.