What happens if I get whitening serum on my gums or lips?
The whitening gel is for the teeth only. Try to avoid getting gel on your gums or in your mouth/lips. It is not dangerous in any way, but it could cause irritation if applied to the lips or gums. If you accidentally apply the gel on your gums or lips and notice irritation or swelling, make sure to rinse your mouth and lips thoroughly with water.