bestsmile whitening is not suitable for people under the age of 18, pregnant women, women who are breastfeeding and for people with serious health problems.
Furthermore, if you have an allergy or chemical sensitivity to any of the ingredients in the Opalescence gel (potassium nitrate and fluoride), you should not whiten your teeth.
Please note that the whitening gel can only whiten natural tooth enamel. The colour of fillings, Veneers, crowns or artificial teeth will not be affected by the whitening gel.