Plus White 5 Minute Speed Whitening System is an extremely affordable over-the-counter teeth-whitening option that works. Users say results are noticeable within a few days. The mouth trays are awkward and cumbersome, however, and don't protect gums from the bleaching solution; gum irritation is a common complaint. If you prefer a more user-friendly teeth whitener, our best-reviewed pick, Crest 3D White Whitestrips Advanced Vivid (Est. $40) , gets good reviews.
Fast results. Plus White 5 Minute Speed Whitening System consists of an over-the-counter whitening gel, which is to be used in the included mouth tray. Also included in the kit is a pre-whitening rinse. The system is not recommended for anyone with unfinished dental work -- including cavities and gum disease.
Reviewers at MakeupAlley.com and TeethWhiteningReviews.com say they are pleasantly surprised by how well Plus White works. One user explains, "For as cheap as it is, I expected it not to work ... the results are amazing." Some reviewers notice a difference after the first application, but for most it takes a few days. As with all teeth whiteners, results vary greatly depending on the condition of your teeth.
Cumbersome trays. Manufacturers recommend using Plus White 5 Minute Speed Whitening System for five minutes twice a day, for 14 days. The whitener may produce fast results, but reviewers say it isn't necessarily easy or convenient. There are several steps included in the whitening process, but most users only use the whitening gel; the pre-whitening rinse must be premixed, and users say it tastes bad.
Several say the trays are uncomfortable as well: They are big and awkward and often don't allow the gel full contact with gums. In order to get around the problem, several users say they apply the whitening gel directly to teeth with a cotton swab and wear the tray only to prevent gel from touching their lips.
Risk of gum irritation. The most common complaint from users is that Plus White has a tendency to irritate gums. This is a common problem with whitening trays that aren't custom-fit. One user at MakeupAlley.com suggests applying the whitening gel directly to teeth and using cotton balls -- placed between your gums and lips -- as a barrier. She says this system works better than the trays included with the kit. Plus White is a safe over-the-counter teeth-whitening option as long as your teeth and gums are in good health.
This up-to-date list of the best teeth-whitening products is based on user reviews compiled by the editors of TotalBeauty.com. It names the Plus White 5 Minute Speed Whitening System the best product, saying it is "[a]ffordable, fast-acting, gentle and effective."
Review: 2 Best Teeth Whiteners -- and the 4 Worst, Amanda Montell, Sept. 17, 2013
Reviewers at TeethWhiteningReviews.com are, for the most part, very satisfied with Plus White 5 Minute Speed Whitening System. More than 120 users give it high overall ratings. Most say they saw noticeable results within a matter of days. Some say the tray is bulky and uncomfortable, however.
Review: Plus White 5 Minute Speed Whitening System, Contributors to TeethWhiteningReviews.com, As of January 2014
Nearly 170 reviewers at MakeupAlley.com give Plus White 5 Minute Speed Whitening Gel an overall rating of 4.2 out of 5. A whopping 84 percent say they would buy it again. Most users here were surprised at how well it works. Several say they saw results after about three days. Some reviewers say the formula causes tooth sensitivity and gum irritation.
Review: Plus White - 5 Minute Speed Whitening Gel, Contributors to MakeupAlley.com, As of January 2014