At home – Your custom home whitening kit from your local Your top dentist in New York involves a special tray that is customized to fit over your teeth. You also receive prescription whitening gel, which you insert into the tray before you wear it. Your dental skilled provides you comprehensive guidelines regarding how lengthy you must wear the tray every single day – usually 30 mins to one hour, or overnight – and you should expect the whole residence bleaching or making the use of invisalign procedure to take between two and four weeks, leaving you with a dazzling smirk.