Question: how often can you use luster whitening?
Answer: The 2 Minute White Treatment Kit gives you the flexibility to whiten on your own schedule. You can do up to 4 treatments a day (2 in the morning, 2 in the evening) for three days, or you can do 2 treatments a day (1 in the morning, 1 in the evening) for six days. Thanks for choosing Luster!