Love this product!
The best teeth whitening pen I've ever used. No discomfort or sensitivity. No weird or harsh after taste. And it's working well at whitening!!
This is, and we can’t stress this enough, our biggest contribution to teeth whitening. This pen does 2 things very well; it helps protect your teeth against stains AND it whitens them.1,2,3 Brush on before you drink coffee, tea or red wine to help protect against staining,1 leave it on for 30 minutes for whiter teeth, without the sensitivity.3*