Take some foil and fold it to form to your teeth. Take alittle toothpaste and bakingsoda and mix together really well. Put some of the mixture into the foil and place on your teeth. Leave on for one hour everyday. Brush teeth normally afterwards. You will notice whiter teeth in just a few days.
I`m not sure what information you need personally but I live in Japan. I teach English here and heard a great home remedy from one of my students.
Gather ashes from a fire (a wood fire) and dip a wet toothbrush into the soot. Simply brush with the soot. Brush with toothpaste after to get the minty taste. The Crystals in the ashe really make your teeth whiter right away! Try it! It works wonders.
Ingredients: Wood Ash
Instructions: This is an update to the suggestion to brush with wood ash. The reason wood ash whitens your teeth is because it contains potassium hydroxide (aka lye). However, only hard wood ash contains significant concentrations of potassium hydroxide, soft wood ash does not.Before lye was available commercially, soap was made by leeching the potassium hydroxide from hard wood ash and then combining it with tallow (rendered animal fat).
You may want to exercise caution when using hard wood ash too often as a tooth whitening agent. The harshness of the potassium hydroxide could significantly damage your teeth over time.
stick with these. Remember that these are not a substitute for brushing with
fluoride toothpaste -- you must brush with fluoride toothpaste after ANY whitening method to prevent tooth decay.