Teeth Whitening is a cosmetic dental procedure designed to make natural teeth look lighter. Professional whitening treatments generally use specially formulated bleaching agents to break down stains on the tooth surface and within the enamel. The treatment can help improve discolouration caused by coffee, tea, red wine, tobacco, and the natural ageing process. The results depend on the original tooth colour, the type of stains, and the whitening method used. A dental professional can examine your teeth and recommend an appropriate approach.