These tooth brushes work very well they are very soft and good for people who have sensitive teeth they also whiten your teeth. You can get these off Ebay and Amazon for a decent price.

I bought a pack of 5 of these charcoal toothbrushes from Ebay for around $2.00. They claim to whiten your teeth and also do everything a normal toothbrush does. The toothbrushes are very soft, so they are perfect for sensitive teeth. I have been using one for the past week, and I do notice a bit of a difference in the whiteness of my teeth. I found this to be a great purchase.