In art studies iconography is the description and systematiza-tion of typological conventions and schemes used in the representation of either persons (real or legendary) or narrative scenes.
Whitening Your Teeth with Hydrogen Peroxide. 1  1. Use hydrogen peroxide. 2  2. Purchase a bottle of hydrogen peroxide from your local drugstore. 3  3. Use a mixture of the hydrogen peroxide and water as a mouthwash.  4. Brush your teeth with a hydrogen peroxide and baking soda paste once a week. This mixture will help keep your teeth looking white and clean. Here's how you can make it: Pour 2 teaspoons (10ml) of hydrogen peroxide into 3 teaspoons (15ml) of baking soda. Mix these together until a paste forms.
A RealAge answered. The length of time it takes to whiten your teeth will vary with the amount of discoloration of your teeth. For treatments performed by your dentist, it generally takes 30-90 minutes per visit to make your teeth brighter. It may require as little as one visit and up to ten visits over a period of time. Over-the-counter products may require you to wear a mouthpiece anywhere from 30 minutes a day to overnight for up to a month.