What do you use for whitening?

I used to use soda as a good old tried and true method. now she began to understand that this is already the last century, and connected activator zoom whitening  at a session at the dentist. This cannot but please me, because it is this decision that adds to my smile that charm that was so lacking before. and why doubt when everything turns out so beautifully. I think that everyone can try how it works.