Baking soda also makes a perfect stand-in for many personal care products, which are adding their own twist to the toxic tangle of pollutants and personal health (mainly in the form of synthetic fragrance. A paste made from baking soda and a 3 percent hydrogen peroxide solution can be used as an alternative to commercial non-fluoride toothpastes. (Or here’s a formula for a minty version.) You can also just dip your toothbrush with toothpaste into baking soda for an extra boost. Put one teaspoon in half a glass of water, swish, spit and rinse. Odors are neutralized, not just covered up. Soak oral appliances, like retainers, mouthpieces and dentures, in a solution of 2 teaspoons baking soda dissolved in a glass or small bowl of warm water. The baking soda loosens food particles and neutralizes odors to keep appliances fresh. You can also brush appliances clean using baking soda. Give yourself an invigorating facial and body scrub. Make a paste of 3 parts baking soda to 1 part water. Rub in a gentle circular motion to exfoliate the skin. Rinse clean. This is gentle enough for daily use. (For a stronger exfoliant, try one of these great 5 Homemade Sugar Scrubs.) Pat baking soda onto your underarms to neutralize body odor. Baking soda is a safe and effective antacid to relieve heartburn, sour stomach and/or acid indigestion.