Teeth whitening involves bleaching your teeth to make them a lighter colour.
Teeth whitening cannot make your teeth brilliant white, but it can lighten the existing colour by several shades.
Standard teeth whitening involves 2 to 3 visits to the dentist, plus sessions at home wearing a mouthguard containing bleaching gel.
You usually need to wear the mouthguard and bleaching gel for a specified period of time over a few weeks.
Another procedure called laser whitening or power whitening is done at the dentist’s surgery and takes about an hour.
Teeth whitening is cosmetic and therefore generally only available privately.