This state-of-the-art formula conveniently whitens your teeth while you sleep, and it also increases the gloss and luster of your enamel, giving you a more youthful smile. NiteWhite's highest-strength formula -- 22 percent carbamide peroxide -- is not recommended for overnight use, however. Although the product can cause some tooth sensitivity, its formula is designed to reduce as much irritation as possible.
Clinical grade. NiteWhite features a dual-barrel syringe: one side contains a concentration of 10 percent, 16 percent or 22 percent carbamide peroxide, and the other side contains soothers, desensitizers and conditioners, TeethWhiteningReviews.com reports. These gels are mixed and activated automatically upon application for higher effectiveness.
User reviewers at Amazon.com were by and large pleased with the results of the treatment, saying the product delivers impressive whitening capabilities. According to a study in the International Journal of Dentistry, which compares Opalescence PF and NiteWhite ACP side by side, the two products both caused significant aesthetic improvement, although NiteWhite had a higher incidence of color relapse over a period of six months.
Near effortless. Like Opalescence PF, NiteWhite requires the use of a whitening tray that has been custom fitted and administered by a professional dentist. And, like Opalescence PF, it delivers long-lasting, noticeable results after just a few treatments. The higher the strength, the shorter the treatment -- despite the name of the product, the 22 percent concentration formula should only be worn for a maximum of an hour per day. The other concentrations can be worn overnight or for a few hours at a time.
Patented formula designed to keep sensitivity at bay. NiteWhite ACP is ADA-approved, and its chief ingredient (carbamide peroxide) is recognized by the FDA as an oral antiseptic. Some users at Amazon.com and TeethWhiteningReviews.com report experiencing sensitivity, but the product's patented calcium phosphate formula re-mineralizes the enamel of the teeth and absorbs rapidly to keep sensitivity at a minimum. Editors of TeethWhiteningReviews.com recommend that users with sensitive teeth try switching to a sensitivity toothpaste such as Sensodyne one or two weeks before beginning the NiteWhite regimen, or using a desensitizing gel after whitening.
1. International Journal of Dentistry
This clinical study explores the effectiveness of two at-home bleaching products: Opalescence PF and Nite White ACP. Testing the products on 34 participants, the authors evaluate the results directly after treatment and six months down the line. They find that both products produce significant improvement but that Nite White ACP showed a higher degree of relapse than Opalescence PF.
Review: A Clinical Study of the Effectiveness of Two Different 10% Carbamide Peroxide Bleaching Products: A 6-Month Followup, S. R. Grobler et al., March 6, 2011
2. 87th General Session of the International Association for Dental Research
Researchers compare the results of at-home and in-office dentist-supervised whitening treatments. In testing, five eight-hour at-home treatments were needed to match the results of a single one-hour in-office treatment. NiteWhite Excel was used for at-home treatments and Zoom gel for in-office whitening.
Review: Subjective and Objective Comparison Between At-Home and In-Office Tooth Whitening, J. Da Costa et al., April 3, 2009
This article and collection of user reviews focuses on Discus Dental's NiteWhite ACP, which was the name of NiteWhite before it was rebranded by Philips Zoom. The editors of TeethWhiteningReviews.com contend that the product will bring about excellent results. Users give it an overall rating of 3.9 out of 5 based on effectiveness and affordability.
Review: Nite White ACP, Editors of TeethWhiteningReviews.com, Not Dated
The author, a dental hygienist, gives NiteWhite ACP an overall rating of 4 out of 5 stars based on effectiveness, ease of use, safety and value for money. She praises the product's enamel-boosting abilities, but notes that the 22 percent carbamide peroxide formula should not be used overnight, as it can cause serious tooth sensitivity.
Review: Nite White ACP Review, Sharon Boyd, RDH, July 31, 2012
In this short review, Linda Montalto names NiteWhite the best teeth-whitening gel. She says its formula is appropriate for sensitive teeth and "re-mineralizes your teeth for a more youthful luster." It is unclear whether the author has tested the product, but Bestcovery.com typically assigns product categories to individuals with expertise and knowledge of a given niche.
Review: Philips Zoom Nite White 22% Teeth Whitening Gel, Lisa Montalto, Aug. 23, 2012
This article on the efficacy of do-it-yourself teeth whitening recommends Philips NiteWhite and Day White for their enamel rebuilding and sensitivity-reducing properties. The author also discusses Philips NiteWhite Turbo, Philips Zoom! Weekender Kit, Opalescence PF and Opalescence Treswhite Supreme.
Review: At-Home Teeth Whitening: How Effective Is Do-It-Yourself Whitening?, Linda Dyett, Not Dated
With 120 customer reviews, NiteWhite has a favorable collective score of 4.2 out of 5 stars. Most say they are very pleased with the results, but some have concerns that the product was already expired.
Review: Nite White Excel 3 ACP Z 22% Teeth Whitening Kit, Contributors to Amazon.com, As of January 2014