22 doctors weighed in:

Do whitening strips expire? If so, what if I used old ones?

22 doctors weighed in
Dr. Jay Kansal
Dentistry
6 doctors agree

In brief: Yes

Yes white strips do expire, basically the hydrogen peroxide in the strips reacts and causes it to expire.
There should be no adverse effects to using expired white strips besides them not really whitening.

In brief: Yes

Yes white strips do expire, basically the hydrogen peroxide in the strips reacts and causes it to expire.
There should be no adverse effects to using expired white strips besides them not really whitening.
Dr. Jay Kansal
Dr. Jay Kansal
Thank
Dr. Jerry Hu
Dentistry - Cosmetic
5 doctors agree

In brief: Yes

Expired products are not as effective.

In brief: Yes

Expired products are not as effective.
Dr. Jerry Hu
Dr. Jerry Hu
Thank
Dr. Alex Shvartsman
Dentistry - Cosmetic
2 doctors agree

In brief: Of course!

All chemical based products expire!

In brief: Of course!

All chemical based products expire!
Dr. Alex Shvartsman
Dr. Alex Shvartsman
Thank
Dr. Don Millner
Dentistry - Cosmetic
1 doctor agrees

In brief: Yes they "expire"

Whitening strips have a very limited shelf life.
However, they can be safely used beyond their expiration date. Overtime, as the active peroxide ingredient degrades, the whitening strip becomes significantly less effective. The shelf life of the strips can be prolonged by keeping them refrigerated.

In brief: Yes they "expire"

Whitening strips have a very limited shelf life.
However, they can be safely used beyond their expiration date. Overtime, as the active peroxide ingredient degrades, the whitening strip becomes significantly less effective. The shelf life of the strips can be prolonged by keeping them refrigerated.
Dr. Don Millner
Dr. Don Millner
Thank
Dr. Glenn MacFarlane
Dentistry - Cosmetic
1 doctor agrees

In brief: EVERYTHING EXPIRES

Everything expires sometime bulldog and so will you.
Expiration is the shelf life which all products need to have listed. If you use anything that has expired it may be still good or ineffective. Try them. The only thing you'll lose is time.

In brief: EVERYTHING EXPIRES

Everything expires sometime bulldog and so will you.
Expiration is the shelf life which all products need to have listed. If you use anything that has expired it may be still good or ineffective. Try them. The only thing you'll lose is time.
Dr. Glenn MacFarlane
Dr. Glenn MacFarlane
Thank
Dr. Jeffrey Goldstein
Dentistry - Cosmetic
1 doctor agrees

In brief: Yes, they do expire.

The whitening chemical has a definite shelf life.
If the product is used after the expiration date, you risk nothing except possibly being less effective at whitening or completely useless. There should be no health risks involved.

In brief: Yes, they do expire.

The whitening chemical has a definite shelf life.
If the product is used after the expiration date, you risk nothing except possibly being less effective at whitening or completely useless. There should be no health risks involved.
Dr. Jeffrey Goldstein
Dr. Jeffrey Goldstein
Thank
Dr. Gilberto Nunez
Dentistry - Cosmetic
1 doctor agrees

In brief: Yes

Withening strips have an expiration date, after that date the product starts to loose its potency and efficacy, i recommend for you to get new strips for a much better and predictable result.

In brief: Yes

Withening strips have an expiration date, after that date the product starts to loose its potency and efficacy, i recommend for you to get new strips for a much better and predictable result.
Dr. Gilberto Nunez
Dr. Gilberto Nunez
Thank
Dr. Sander White
Dentistry - Cosmetic
1 doctor agrees

In brief: Use new ones

The bleaching chemicals deteriorate with time. Use fresh ones.

In brief: Use new ones

The bleaching chemicals deteriorate with time. Use fresh ones.
Dr. Sander White
Dr. Sander White
Thank
Dr. Jeffrey Yost
Dentistry

In brief: Yes they do expire

Most of the whitening products we use in our office have a shelf life of 18 months.
Once the whitening strips expire, they will not cause any harm to your teeth, but their whitening effectiveness may be reduced or even completely eliminated. For best results, use your whitening strips BEFORE they expire. Even better yet, get your teeth cleaned first, and then apply new whitening strips.

In brief: Yes they do expire

Most of the whitening products we use in our office have a shelf life of 18 months.
Once the whitening strips expire, they will not cause any harm to your teeth, but their whitening effectiveness may be reduced or even completely eliminated. For best results, use your whitening strips BEFORE they expire. Even better yet, get your teeth cleaned first, and then apply new whitening strips.
Dr. Jeffrey Yost
Dr. Jeffrey Yost
Thank
Dr. Ladan Zinati
Dentistry

In brief: Yes

When a product expires, it may not be as effective.

In brief: Yes

When a product expires, it may not be as effective.
Dr. Ladan Zinati
Dr. Ladan Zinati
Thank
Dr. Joseph Capista
Dentistry - Cosmetic

In brief: Yes

All withering products expire or loose some of their effectiveness with time.
If they are old you can still use them. They are safe but may be less effective.

In brief: Yes

All withering products expire or loose some of their effectiveness with time.
If they are old you can still use them. They are safe but may be less effective.
Dr. Joseph Capista
Dr. Joseph Capista
Thank
Get help from a real doctor now
Dr. Andrea Brand
Board Certified,
7M people helped
Continue
108,000 doctors available
Read more answers from doctors