Soothe minor mishaps: For sunburn pain, saturate a washcloth with a solution of 4 tablespoons baking soda in 1 quart water. Apply to affected area. Ease windburn or poison ivy irritation with a paste of 3 parts baking soda and 1 part water. Do not use on broken skin.
Relaxing baths: Baking soda added to the bathwater has a softening effect on the skin. Add 1/2 cup to a full bath.
Make bubbling bath salts with 21/2 cups baking soda, 2 cups cream of tartar, and 1/2 cup cornstarch. Mix them together, and store in a covered container. Use 1/4 cup per bath.
Relieve itchy wintery skin in a bath with 1 cup baking soda and 11/4 cups baby oil in the water.
Tooth & Mouth Care
Baking soda is a traditional item in old-fashioned toothpaste. You can still use it today.
Toothpaste: Mix 3 parts baking soda with 1 part salt. Add 3 teaspoons of glycerin. Add 10 to 20 drops of flavoring (peppermint, wintergreen, anise, or cinnamon) and enough water to make a paste. Spoon into a small, refillable squeeze bottle.
Sprinkle baking soda into your palm, dip a damp toothbrush into it, and brush your teeth.
Refreshing mouthwash: To freshen breath, use 1 teaspoon baking soda in 1/2 glass of water, swish the solution through your teeth, and rinse.
Homemade Antacid With Baking Soda
Take 1/2 teaspoon baking soda in 1/2 glass of water to relieve acid indigestion or heartburn. Read antacid use information on the baking soda package before using.
Warning: People who must restrict salt intake should not use baking soda as an antacid. Do not take for nausea, stomachache, gas, cramps, or distention from overeating.
http://health.howstuffworks.com/uses-for-baking-soda-health-and-beauty-ga.htm