Teeth discolouration due to ageing is a common problem, and one that can be treated with Crest Whitestrips. The amount of whitening that you will achieve will depend on how discoloured your teeth are to start with, but most people will see some improvement.
Remember that teeth whitening is not permanent, so you may need to repeat the treatment every few months to maintain the results. You should also avoid foods and drinks that stain teeth, such as coffee and red wine.