Teeth Whitening BLOG

Whitening wrecks your enamel. You have probably read that somewhere. Here is what the clinical evidence shows, why most scary studies leave out saliva, and where the real enamel risk sits.

If you have searched online, you have probably come away more confused than when you started. Here is what the evidence actually shows about professional teeth whitening — the chemistry, the sensitivity, and what a well-delivered treatment actually involves.

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.