Think about a whitening schedule: preliminary daily sessions till desired shade
https://privatebin.net/?1f9f8adbbfebf69b#UnTP23swdHVCFK5YpZ5HR16AWDjRUKknmyuXrFFnXzo
Think about a whitening schedule: initial day-to-day sessions till desired shade, then weekly or monthly touch-ups to keep brightness without over-bleaching.