Whiter Nails: Dissolve 4 tablespoons Baking Soda in 1/2 cup Hot Water. Add 2 tablespoons of Peroxide. Soak nails for a minute. Or make a paste using 1 tbsp peroxide and 2 1/4 tbsp baking soda. Let this paste sit on your nails for 5 minutes and voila! White nails!