Fluoride varnish or remineralizing pastes can be applied after whitening to strengthen enamel
https://privatebin.net/?d169668a54d1b388#HJDX1qAemgB844sbVDvyLg1qY98Ex5roZua3N4TuKXJf
Fluoride varnish or remineralizing pastes can be used after whitening to reinforce enamel and minimize level of sensitivity while preserving your brighter smile.