One of the most common questions we hear is: how long does teeth whitening last? The good news is, with professional treatment, teeth whitening results can last for years—especially with the right maintenance and lifestyle habits. Whether you're getting ready for a big event or just want to brighten your everyday smile, understanding what to expect can help you maintain those results for the long haul.

If you’ve been thinking about brightening your smile, you’ve probably come across two common options: whitening at a dental office or visiting a specialty whitening clinic like Grin. While both paths can lead to a whiter smile, the experience — and the results — are very different.