If the trays have been fitted correctly, you should see impressions of your teeth in the trays. Place a small amount of gel in each tooth impression, where the bottom and front surfaces of the trays meet.
Note: Image is not scale; refer to the Quick Start Guide or Practice Card for the correct dot size.
Note: The whitening gel is absorbed into the tooth and whitens from the inside, so it is not important to cover the entire tooth with whitening gel. If the gel touches your gums or you feel a burning sensation, remove the trays and brush the gel off your gums and use less gel for your next treatment.
Warning: Do not overfill your tray with gel, as this may cause gum irritation when excess gel gets pushed out of the trays and onto your gums.