Comparison of teeth whitening methods
| In-office professional whitening | At-home professional whitening | Over-the-counter whitening | |
|---|---|---|---|
| Where to get it | at the dentist | at the dentist | at your local drugstore |
| Strength | professional grade, highest concentration | professional grade, high concentration | commercial grade, low concentration |
| Time to see results | a single office visit | several days to weeks | weeks |
- Krystle Lim DDS, Santa Rosa
