I brought this just before christmas.
The brush is so hard it hurt my tender gums, I did not notice if the toothbrush bristle design whitened my teeth any more.
I'm a coffee drinker atleast 4 cups in the morning.
Now the whitening pen...seriously what is the point! I almost used the entire product and you get bugger all! I noticed NO difference.
It tastes like toothpaste it's sticky like toothpaste, I think colgate's optic white toothpaste is alot better.
If you get it on your lips it's a sticky mess.
I do not recommend.
And really for the price! I paid $18 at Pak n Save it's not worth it.
If you want something to whiten up your teeth without having to pay for an expensive whitening kit I would highly highly recommend this. I've always had slightly yellow teeth but when I use the whitening pen they whiten so much. Obviously it's not as good as a whitening treatment and I personally don't use it twice a day every single day but really it works so well. I think it's totally worth the price (I think I got it for $25) and the pen lasts a surprisingly long time. I know you're meant to replace your toothbrush regularly so if you're someone who does do that it's so easy to just keep the pen and use a cheaper toothbrush until it runs out. It doesn't dry out the product inside the pen or anything like that to leave it out of the toothbrush. Oh I should explain, the whitening pen fits into the bottom of the toothbrush so it's like a handle, then you just pull it out and apply it to your teeth as you need it. 2 clicks for your top front teeth, 2 clicks for your bottom row of teeth. Because of the way the pen is designed it's practically impossible to overuse the product. Once you've had it for a long time it can get kinda difficult to slot the pen into the brush but this doesn't bother me at all, personally. Just make sure you don't accidentally end up throwing the pen halfway across the room when it slides out like I do!
Tips: After the initial first few days of intense whitening, don't use twice a day every day.