Inclusion Criteria:  Adult patients attending the dental clinic for treatment of white spot lesions on their teeth using fluoride toothpaste once or twice daily for brushing does not use any other form of fluoride history of recent fixed orthodontic treatment presenting with white spot lesions on minimum of three anterior or posterior teeth on the labial surfaces provide written informed consent  Exclusion Criteria:  Patients who do not fit into the above mentioned inclusion criteria. Patients who are allergic to milk or any other milk products will be excluded from the study. Milk protein allergy and lactose intolerance tests will be performed on participants belonging to active comparators Tooth Mousse and MI paste which contain casein phosphoprotein before enrolling them in the trial. Patients who are vegan and do not use or consume any animal products