There r two ways fr tooth whitening - one is home bleach which will cost you approximately 3500/- , we will be fabricating trays n giving u to use it at home . You have to use it for  about 15-20 days . The other way is office bleach- just single appointment or maximum two. It takes about one hour fr d procedure. V l b applying the material n keeping it fr an hour n then removing it. It costs around 7000/- approximately.