Teeth whitening works best on yellowish stains, which are often caused by food, beverages, or aging. However, it may be less effective on brown or grayish stains or on teeth that have been discolored due to medication (e.g., tetracycline) or injury. If you have very dark or stained teeth, you may need a more advanced treatment, such as professional whitening by a dentist.

Yes, teeth whitening is generally safe when done correctly, whether at home or by a professional. However, overuse or incorrect application of whitening products can lead to tooth sensitivity, gum irritation. It’s always best to follow instructions and consult a dentist if you have concerns.

Tooth sensitivity is a common side effect of whitening, especially with peroxide-based products. The bleaching agents can temporarily increase the permeability of the enamel, allowing hot, cold, or sweet stimuli to reach the sensitive nerve endings in the tooth. This sensitivity usually goes away within a few days after treatment. If sensitivity persists, consult your dentist for advice or try a whitening product formulated for sensitive teeth. Potassium nitrate used in Avin White, helps in preventing sensitivity while whitening your teeth.

For our at-home treatments, we recommend whitening every 1-2 weeks or once a month. Overuse can lead to tooth sensitivity or gum irritation.

The duration of teeth whitening results can vary depending on several factors, but generally, the effects can last anywhere from 6 months to 2 years.