Try mixing some baking soda and a couple ounces of lemon juice in a bowl. Stir it up then use a q tip or cotton ball to apply it to your teeth. Leave it on for one minute, then brush to rinse it off! Hope I helped
Be careful Using pure baking soda on your teeth and lemon excessively. It can wear off fhe enamel. Listerine makes a whitening mouth wash that is gentler. Colgate tooth paste also has some gentler means of whiting. But a healthy smile is not necessarily pure white. It is faddish. There are different acceptable shades of color in your smile. Whitening should not be taken to the extreme.