Founded by two sisters, Terra & Co is an all natural, gluten-free chemical free, activated charcoal solution to brighten and whiten your teeth. No more brushing and rinsing your mouth with harsh chemicals. Shop Terra & Co today to explore the wide range of teeth whiteners including Brilliant Black toothpaste - uses activated charcoal to whiten teeth. Stop using chemicals and whiten your teeth the organic way with Terra & Co Charcoal Teeth Whitening.