Teeth whitening is safe for most people and the best candidates are those who have mild to moderate discoloration. There are certain types of discoloration that cannot be corrected by whitening treatments, and there are certain dental or medical conditions that may decrease the effectiveness of teeth whitening. The following clients are not suitable for teeth whitening: - Clients who are pregnant or breastfeeding. If you wish to have your teeth whitened whilst pregnant or breastfeeding, please contact your health professional first.  - Clients under the age of 16 - Clients who have not visited the dentist in the past 6-12 months - Clients with open cavities, gum disease, bleeding gums, swollen and inflamed gums and those who need filling work from their dentist. If you have any concerns, we would recommend you visit your dentist first to ensure you are dentally fit before proceeding with teeth whitening.