Smileactives Original Tooth Whitening Pen Multi Pack- Set of 4

don't waste your money! By the time I got to the 3rd one it was dried up and the 4th one was empty! I'd give them 0 stars except I was able to us two of the 4.

I like this product very much. So easy to use and the gel is very gentle on my gums as well as a Whitener on the teeth. I shall but this product again.