Brite Smile Teeth Whitening Pen - tested and recommended
There's no secret sauce in Brite Smile; the active is peroxide just as it is in just about every other teeth whitening product. Somehow though, the 8% concentration and the consistency of the gel works.
Although the EWG doesn't like PEG-60 hydrogenated castor oil, published studies demonstrated that it is not toxic at a concentration of 100%. I still feel guilty knowing that the people who harvest the castor oil plant in the first place are exposed to the seeds, which contain ricin, a compound that is only slightly less toxic than plutonium – a single molecule can disrupt a human cell.
On the whole, I think it performs better than Go Smile, another on-the-go whitener, and doesn't require endless rubbing. Bear in mind that Brite Smile is better at micro-targeting specific stains than overall whitening.
By the way, Watts has redesigned its trays to fit better without boiling. I'll be giving them a try in a few days.
Water, hydrogen peroxide (8%), carbomer, glycerin, PEG-60 hydrogenated castor oil, flavor, sodium saccharin, editronic acid, potassium stannate.