3 doctors weighed in:

Is there a safe and effective teeth whitener?

3 doctors weighed in
Dr. Heidi Nelson
Dentistry
1 doctor agrees

In brief: Yes

There are whitening gels that are used in a mouth tray made and fitted by your dentist.
They come in different strengths so your dentist must decide if you are a good candidate for whitening and what strength is appropriate for you. They work. Light and laser systems aren't necessarily more effective. Your dentist will check that you don't have other problems with your teeth or gums first.

In brief: Yes

There are whitening gels that are used in a mouth tray made and fitted by your dentist.
They come in different strengths so your dentist must decide if you are a good candidate for whitening and what strength is appropriate for you. They work. Light and laser systems aren't necessarily more effective. Your dentist will check that you don't have other problems with your teeth or gums first.
Thank
Dr. Daniel Wolter
Dentistry

In brief: Any From a Dentist

Over-the-counter products, whitening rinses, whitening toothpastes, and home remedies are very unpredictable and don't work very well in most cases.
Only products or procedures recommended by a dentist are safe, effective, and predictable. This is not something that should be done without a dentist. Not everyone is a good candidate for bleaching, so you need to see a dentist beforehand anyway.

In brief: Any From a Dentist

Over-the-counter products, whitening rinses, whitening toothpastes, and home remedies are very unpredictable and don't work very well in most cases.
Only products or procedures recommended by a dentist are safe, effective, and predictable. This is not something that should be done without a dentist. Not everyone is a good candidate for bleaching, so you need to see a dentist beforehand anyway.
Thank