7 doctors weighed in:
How long does 35% carbamide peroxide take before it whitens teeth?
7 doctors weighed in

4 doctors agree
In brief: It depends
Different people respond differently to the carbamide peroxide.
You should notice a difference in a week or two.

In brief: It depends
Different people respond differently to the carbamide peroxide.
You should notice a difference in a week or two.
Dr. Jennifer Holtzman
Dr. Jennifer Holtzman
Thank
Dr. Mike Deldar
Dentistry - Cosmetic
1 doctor agrees
In brief: Few minutes
Usually 3-5 minutes for 10-14 days.

In brief: Few minutes
Usually 3-5 minutes for 10-14 days.
Dr. Mike Deldar
Dr. Mike Deldar
Thank
Dr. Thomas Stelmach
Dentistry - Cosmetic
In brief: Depends
35% carbamide peroxide is very effective on most discolored teeth.
You will usually see an improvement after three applications. However, some teeth are very resistant to bleaching particularly teeth that are grey. Since the results vary from patient to patient there is no way to accurately answer your question.

In brief: Depends
35% carbamide peroxide is very effective on most discolored teeth.
You will usually see an improvement after three applications. However, some teeth are very resistant to bleaching particularly teeth that are grey. Since the results vary from patient to patient there is no way to accurately answer your question.
Dr. Thomas Stelmach
Dr. Thomas Stelmach
Thank
Read more answers from doctors