I've been using a product called Pearlie (www.pearlie.com) for the last couple of years. It's a coloured enamel that you brush onto your teeth to make them whiter - the more layers you apply, the whiter the result, and it can be removed just by brushing your teeth so it's easy so get rid of if you go a little overboard.
Of course, it won't look as good as a professional whitening, but it's cheap (£14 a bottle) and safer than many whiteners on the market because it just covers up the natural colour of your teeth instead of bleaching them. It takes a bit of practise to get the result you want but once you get the hang of it it looks pretty good.
Of course, it won't look as good as a professional whitening, but it's cheap (£14 a bottle) and safer than many whiteners on the market because it just covers up the natural colour of your teeth instead of bleaching them. It takes a bit of practise to get the result you want but once you get the hang of it it looks pretty good.