Posted by a reviewer on Amazon

The bottom line for me with these optic white platinum products is that they work to clean my teeth without leaving a nasty taste or upsetting the chemistry of my mouth and the lightning is a nice effect but i do not have the utmost faith that in six weeks with this product or four weeks with the other i will have glistening blinding white enamel

Posted by a reviewer on Amazon

However colgate says that their products are good to use for an addition 24 months after their expiration date

Posted by a reviewer on Amazon

In the first week is when the whitening is the most noticeable then it becomes gradual after that but it still whitens

Posted by a reviewer on Amazon

I saw a difference in my teeth right away and they were already rather white

Posted by a reviewer on Amazon

Others have posted the ingredients list so i will not do so

Posted by a reviewer on Amazon

I waited to review this item because i took beginning pictures

Posted by a reviewer on Amazon

I think they are lost in a cloud somewhere