How Long Does Professional Teeth Whitening Last — and How to Maintain It The Short Answer: How Long Does Whitening Last? On average, professional whitening lasts six months to a year before you’ll notice a change in shade. Some people maintain results longer if they practise excellent oral care and avoid heavy staining habits. Whitening is not permanent. Over time, enamel naturally picks up stains and dentine darkens with age.

Teeth Whitening in Auckland: Choosing Between Veneers, or Invisalign and Whitening – What You Need to Know

Woman flossing her teeth as part of a good oral health routine