0
Not nearly as well. The active ingredient is hydrogen peroxide. It degrades to water and oxygen over time. After expiration, there is still active ingredient, but, depending on long they've been expired, the effect is diminished.
http://www.3dwhite.com/teeth-whitening/3d-white-faq.aspx
What else can I help you with?
Can you use crest 3d white to get rid of acne?
In my own opinion I think it works. My teeth have become whiter in the last 2 weeks. I think you have to read the directions on the bottle to get the true results. I actually think this is my favorite toothpaste I have ever had because even after 30-60 minutes my mouth still feels minty fresh.
Can you still use an expired postal order?
If it has expired you cannot use it.
If your ID is expired, can you still fly?
No, you cannot fly with an expired ID.
Can you still get the liberty pass for Pokemon Black and White?
No you can't unless you start the event again.
What is the most effective way to whiten your teeth if you have deteriorating gums on your front bottom teeth and can you still use white strips?
I would suggest going to the dentist. Those white strips can cause further irritation. They aren't recommended for people with gum or other oral issues.
Is an expired license still valid?
no it is not .if you drive with a expired license you are breaking the law
Can you still use a moisturizer if it is expired?
can you??
Can I still travel domestically with an expired passport"?
No, you cannot travel domestically with an expired passport.
Is an expired Ca Id still Id?
If it was still good, it wouldn't have an expiration date. If the ID expired, you need to renew it for it to be valid.
Can I still fly if my license is expired?
No, you cannot legally fly an aircraft if your pilot's license is expired.
Is a promissory note still due if no payments were made on it and the time to make all payments has expired?
No. It has expired.No. It has expired.No. It has expired.No. It has expired.
Do expired laxatives still work?
Yes
