MaxxGel Teeth Whitening Pen. 12% Hydrogen Peroxide for whitening Teeth on The Go! Bundle of 2 Pens.

This stuff works! I was using Liquid Smile, but I couldn't afford $100 a year to keep up my smile. This contains the same percentage of Hydrogen Peroxide at a fraction of the cost. The only downfall is that it doesn't dissolve as quickly as Liquid Smile does. At this price, who can argue?

Works well for getting moderately white teeth. I have not been able to get the extreme white look regardless of the number of applications, even with a light.

The whiting is good because it is 12% but BOTH of my tubes the twist mechanism broke so I literally only got a few uses out of them before it stopped twisting. If they fix the mechanism problem I would purchase again.

I love this stuff. I started with Colgate gel but this works much better . This plus Colgate optic white has dramatically improved my smile.I use 4 tubes, 2 orders a month. Worth it to me for a white smile. Why two stars?. The tubes often fail. They either never work after much twisting or fail half way through. I've been taking the hit but sending the wrong message. Going to keep buying but will be sending back the failed tubes. Pain in the butt but I've already collected three broken tubes

These simply did not work well. I used the one pen every single day for and left it on for around 15-20 minutes. It made my teeth one shade lighter at best and the effects did not last. It would be one shade lighter the rest of the day and by the time I woke up the following day, my teeth were back to the color they were prior to using. You're better off paying for the Crest white strips or something of more quality. I also don't like that if you google this company/product/brand, nothing besides the amazon page and some sketchy other websites come up.Also I hate that these came with absolutely no instructions and I had to look through the reviews to figure out how long to keep this on for.

If you're sensitive to the taste like I am, it takes a bit of getting used to. Regular whitening products make me want to vomit and I can't have on for more than a few minutes. The taste of these is bad... But bearable...

Very happy with the results. I had residual blackness at the gum line of a broken tooth that was not bleached in time, and this whitening stick has eliminated it. It lightens teeth to a natural shade when used once daily...before bedtime is best. We like that it doesn't make our teeth look artificially bleached - like paper. Have had some mechanical problems, which the seller quickly accommodated.

I wasn't totally impressed with the product. The gel stopped coming out after a while when I twisted the top. I had to throw it away. It didn't seem to do much whitening to my teeth.