Maintenance matters: utilize a straw for dark drinks, rinse after meals
https://privatebin.net/?518cef74d27e7abf#8wta3YraFTmS59rz9a1YqFb5gNHhPqQ8KhkCk4JKx7h3
Upkeep matters: use a straw for dark drinks, rinse after meals, and schedule routine cleansings to preserve your whitening results longer.