💦USAGE REGIMEN:

10 to 20 minutes per day for 6 days, the duration of use depends on the level of tooth discoloration.
First week: once a day in the evening.
Following weeks: 2 to 3 times per week (using it intermittently).
1 tube of gel in the kit can be used for about 10-15 times.
Can be used long-term without worrying about tooth enamel erosion.
Whitening effect can last an average of 3-6 months or up to 1 year depending on tooth enamel and lifestyle, brushing habits.