How many days will it take for at home bleaching trays (kept on for two hours a !
Question:
How many days will it take for at home bleaching trays (kept on for two hours a day) to show results?
Answers:
You should see initial results after the first installment (top stain brightening)...and super-bright results within several installments. You might try coffee/colored soda through a straw during the process, as they are big teeth stainers.