You know what really works is strawberrys. The little seeds are really good for your teeth whitening. If u kinda rub the strawberry little seeds around your teeth for few second then eat it . It will help so just by a pack of strawberries and eat then slowly and after brush your teeth.
Baking soda is the best product you can use for brushing your teeth as well as Arm & Hammer baking soda toothpaste. I alternate between these and Crest Pro-Health Whitening toothpaste, seeing results in two days. Happy brushing.