Effective, Slowly but Surely
This is subtle, so far, but it works. I've also only had it for 2 weeks, and I drink lots of tea each day (which is why I need it!), so it may have more of an effect as I continue to use it. But it definitely brightens your teeth and is obviously gentler than the harsh bleaching products I've used in the past.<br /><br />It's pricey, though, so not sure if I'll buy it again once I've finished.
Rating: 4 stars