Generally speaking, any exposure to light will affect the whitening agent's level of potency to whiten your teeth. When you open it, pay attention to the consistency of the gel. If it appears foggy or white, it is too old.
How long is teeth whitening gel good for?
Gels expiration dates vary–some products expire after three months; Smile Brilliant guarantees at least one year outside the fridge and two years inside. You can order gel refills here from Smile Brilliant. The good news is that gels are far from expensive.Mar 10, 2014
Is it bad to use expired teeth whitening strips?
Can You Use Expired Teeth Whitening Strips? ... However, we don't recommend using them past their expiration date, because the whitening ingredient's efficacy will be weakened, and you may not experience the best results.
How do you know if teeth whitening gel is expired?
It is very possible the gel is expired before you make the purchase. If your gel does not have an expiration date take a look at the substance, if it appears to be a foggy white it means it has been oxidized and is no longer effective (Harrison, 2011).Mar 10, 2014
Can you use expired teeth whitening gel?
Over time, hydrogen peroxide changes to water and oxygen. If you try and use a whitening kit after its expiration date, chances are you will only be getting gel and water as the oxygen will have leaked from the package. The oxygen is the key component for whitening your teeth.
How long do whitening gels last?
Gels and strips usually rely on peroxide to whiten teeth. You usually have to use these treatments regularly for two weeks. The results should last for about four months after you have finished the treatments.Apr 25, 2020
How long does it take for teeth whitening to expire?
Most teeth whitening agents are good for approximately a year after it they have been manufactured. It is possible that your dentist gave it to you very shortly after receiving it from the manufacturer. However, it is possible that it may have been at the dentist office for some time.