It is again an amway great product.it has improved my fathers teeth condition his stains are reduced a lot after continuous use of 4months.it just too expensive cost rs 200 approx.so it is for higher class people.it is very effective in tea, ciggerate, coffe stains .if ur teeth are white it will make them sparkle by using the product.please dont expect magic it would take 4-5 months.thumbs up.amway has proved its quality concious.