The Go Smile: Smile Whitening Light System whitens teeth quickly -- in just 30 minutes -- and is relatively easy to use. It doesn't cause as much sensitivity as professional treatments, but it only produces minimal lightening. For slightly more dramatic results, try our best-reviewed pick, Crest 3D White Whitestrips Advanced Vivid (Est. $40) , which lightens teeth about three shades in two weeks.
Whitening results vary. The Go Smile: Smile Whitening Light System amps up Go Smile's patented ampoule whiteners with a handheld whitening light. The light has a detachable and washable mouthpiece so the entire family can use it, though separate ampoules are required. The system comes with 12 whitening ampoules -- enough for four full treatments.
Manufacturers say Go Smile: Smile Whitening Light System lightens teeth up to six shades, but for testers at Good Housekeeping it only lightened teeth an average of 1.6 shades. Editors say, "As with all whitening treatments, the greater the tooth discoloration, the more pronounced the results." Although most users at Amazon.com didn't notice any whitening effects, one user says her teeth were much whiter after treatment.
Only requires 30 minutes. Testers at Good Housekeeping like how quickly the Go Smile's light system works -- it amps up the power of the bleaching agents so that the whole process only takes 30 minutes. Editors at TeethWhiteningReviews.com agree. Some, however, didn't like having to hold the light for so long. Maggie Gallant, a beauty expert, told CBS News that the system has a few too many steps. The treatment consists of three 10-minute light-assisted sessions in which three Go Smile ampoules are applied to teeth before each session.
Reduced sensitivity. Go Smile: Smile Whitening Light System aims to mimic professional in-office light-assisted whitening for a fraction of the cost, but according to the ADA over-the-counter products aren't as safe because they aren't supervised by a dentist. Despite reports that the Go Smile system is gentler, editors at TeethWhiteningReviews.com say there is potential for tooth sensitivity because the serum is strong and three ampoules are used for one treatment.
1. Good Housekeeping
The Good Housekeeping Research Institute evaluates the Go Smile: Smile Whitening Light System. The shade of volunteers' teeth was recorded before and after using the system. The system lightened teeth an average of 1.6 shades, with one tester improving by five shades. Editors say that more pronounced results occur with greater levels of discoloration. Testers like that the entire process took just 30 minutes, but some didn't like having to hold the light. It isn't clear how many volunteers were included in the test.
Review: 30 Minutes to a Brighter Smile?, Editors of Good Housekeeping, Not Dated
Editors at TeethWhiteningReviews.com discuss the Go Smile: Smile Whitening Light System in great detail, although it isn't clear if they tested it. Editors say the system is easy to use but could potentially cause sensitivity issues because the serum is "really strong." Only one user reviews the formula here, so it's hard to get a good consensus about consumers' overall opinions.
Review: Go Smile Whitening Light, Editors of TeethWhiteningReviews.com, Not Dated
3. Men's Health
In this article about the best teeth-whitening products on the market, Moira Lawler recommends Go Smile: Smile Whitening Light "for the high-tech guy," saying it offers similar technology to in-office treatments at a fraction of the price. She points out that the treatment works very quickly.
Review: The Best Ways to Whiten Your Teeth, Moira Lawler, March 21, 2013
Beauty expert Maggie Gallant says that Go Smile: Smile Whitening Light System is a good option if you only have 30 minutes to whiten teeth. She explains the light accelerates and "amps up" the process, but warns that there are a lot of steps involved and that sensitivity could be an issue. It isn't clear whether she has tested any of the products she recommends.
Review: Cinch Teeth Whiteners for Sparkling Smile Fast!, Editors of CBS News, Jan. 17, 2011
About 12 reviewers at Amazon.com comment on Go Smile: Smile Whitening Light System, which earns an overall rating of 2.4 out of 5 stars. Half of the reviewers saw no results at all. One reviewer used three treatments (nine ampoules) back-to-back in order to produce dramatic results, without any sensitivity issues.
Review: Go Smile Whitening Light System, 12 Count, Contributors to Amazon.com, As of January 2014