Opalescence™ 10%

Carbamide Peroxide

Opalescence 10% teeth whitening gel offers easy syringe delivery designed for use with customized take-home whitening trays. The gel contains 20% water to prevent dehydration, and the sticky, viscous formula helps keep the gel and tray in place.

  • Opalescence gel is effective in helping reduce shade relapse as compared to competitor tooth whitening products1
  • Two flavors: Mint and Regular
  • Day or night wear
  • Sticky, viscous gel won’t migrate to soft tissues and ensures tray stays securely in place
  • This product does not contain potassium nitrate or fluoride
  • Vegan—no animal products
  • Certified gluten free
  • Certified kosher


Opalescence 10%
Opalescence 10%

Professional Teeth Whitening Day or Night

For use with customized take-home teeth whitening trays, the award-winning Opalescence 10% teeth whitening provides personalized options for those patients who desire the best teeth whitening experience. As the global leader in whitening with over 30 years of proven success, Opalescence 10% teeth whitening will provide your patients with the white teeth and dazzling smile they deserve.

Opalescence 10% Global Leader
Global Whitening Leader

With its easy syringe delivery, 10% carbamide peroxide concentration, and two great-tasting flavors (Mint or Regular), Opalescence 10% teeth whitening gel allows for convenient, comfortable, sustained wear day or night. This product does not contain potassium nitrate or fluoride. The whitening gel is formulated with at least 20% water content which helps prevent dehydration. Opalescence 10% teeth whitening gel is vegan—no animal products are used. It is also certified gluten free and certified kosher, so it fits in with the lifestyles and beliefs of patients from diverse backgrounds.

Gluten Free
Opalescence 10% Mint Opalescence 10% model
Opalescence 10% Tray

The Original Sticky, Viscous Teeth Whitening Gel

Unlike other teeth whiteners, Opalescence 10% teeth whitening does not use an uncomfortable LED teeth whitening light. The 10% carbamide peroxide whitening gel whitens teeth by chemically removing discoloration deep in the enamel. Our original whitening gel formula is sticky and viscous, preventing the gel from migrating during treatment and helping to keep the tray in place. This makes the whitening treatment more comfortable and effective, which results in an exceptional teeth whitening experience for your patient.

Opalescence 10% Tray

Custom Teeth Whitening Trays

Opalescence 10% teeth whitening offers patients a comfortable, professional teeth whitening experience in the comfort of their own home. The customized whitening trays are tailored to each patient’s smile, enhancing patient comfort and providing them the attention their smile deserves. Its efficient syringe delivery is easy to use with the custom trays and allows for just the right amount of whitening gel necessary for each application. Because of the 10% carbamide peroxide concentration used, Opalescence 10% whitening can be worn for sustained periods of time, day or night, so patients can whiten their teeth even while they sleep.

Opalescence 10% Day or Night

Create an At-Home Teeth Whitening Kit for Your Patients

While each Opalescence teeth whitening kit is effective as a stand-alone teeth whitening treatment, many patients benefit from using a combination of products to meet their needs. Because each Opalescence teeth whitening product works in combination with the others, it is easy to create a customized teeth whitening kit for any patient to take home. For example, Opalescence 10% teeth whitening gel is a great way to follow-up an Opalescence™ Boost™ in-office whitening treatment and goes perfectly with the daily use of Opalescence™ Whitening Toothpaste.

Opalescence 10% model Opalescence 10% model
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Technical Details

Superior Stability

Opalescence teeth whitening products are among the most stable whitening products in the industry, each maintaining virtually all of its effectiveness over the course of its shelf life. Because delivery times vary depending on the location of each particular dental office, Opalescence whitening products are formulated with transit time in mind. Although shelf life is ultimately dependent on how each product is stored, our teeth whiteners will remain stable even after being shipped across the country2.

Formulated with High Water Content

Many whitening products on the market dehydrate teeth, resulting in uncomfortable sensitivity for patients. Opalescence 10% teeth whitening gel is made up of at least 20% water content which prevents dehydration.

Perfectly Balanced pH

Because teeth whitening gel can be in the mouth for several hours at a time, it’s important to use a product with a pH that closely matches the natural pH of a patient’s saliva. When patients whiten using products that contain carbamide peroxide, like Opalescence 10% whitening, the pH level of the mouth rises to a neutral level (between 7 and 8)3.

Made in the USA from Globally Sourced Materials

Opalescence teeth whitening gels, trays, syringes, and toothpastes are manufactured at Ultradent’s facility in Utah from globally sourced materials. By purchasing products manufactured in the USA, you are supporting our nation’s economy and helping to provide jobs to hundreds of Americans who take pride in what they do.


Before and After Opalescence Whitening


Before whitening. (Photo courtesy of Dr. Robert Nixon)


Upper teeth after five nights of treatment, approximately 40 hours. (Photo courtesy of Dr. Robert Nixon)


Heavy tetracycline discolorations. This whitening process can require a whitening treatment that lasts from several weeks to months.


After whitening with Opalescence gel.


A 12-year-old before whitening.


After five nights of whitening.


Moderate to advanced tetracycline stains.


Improvement in two weeks. With tetracycline stains, treatment can require two to six months.⁴


Opalescence 10% Whitening Patient Instructions

See Instructions for Use for complete instructions, warnings, and precautions.

Step 1

​Express one continuous bead of gel approximately halfway up the facial side of your tray from molar to molar. This should use approximately 1/3 to 1/2 of a syringe per tray.

Step 2

​Place the tray over your teeth. Gently press, or lightly tap the tray to ensure a snug fit. Wear for 8–10 hours, or overnight. If you experience any significant sensitivity, stop treatment and talk to your dentist.

Step 3

​After whitening, remove the tray and use a soft toothbrush, or your finger, to clean any excess gel off your teeth. Rinse your mouth twice, ensuring you don't swallow any gel.

Step 4

​Clean your tray with a soft brush and cool tap water. Store the tray in the case that came with your kit.


​"Opalescence has had 100% patient satisfaction [in our office] for over 10 years. Despite all the changes and competition of OTC products and otherwise, Opalescence has been a product that we have been proud to stake our reputation on....The cosmetic aspect of my practice has been dramatically enhanced."

Dr. Guy Minoly – New York, NY

Frequently Asked Questions

  • How does teeth whitening work?

    Opalescence whitening gels contain an active whitening ingredient—either carbamide peroxide or hydrogen peroxide. Peroxide gels break down into water, oxygen, and reactive oxygen molecules. These reactive oxygen molecules treat both the enamel and the dentin, oxidizing the bonds of discolored stain molecules. By changing the stained molecules, the tooth becomes lighter.5

    Reactive oxygen molecules permeate the entire tooth, so there is no need for the whitening agent to be in contact with every surface of the tooth for the entire tooth to be whitened.5

  • Will teeth whitening affect bond strength?

    Even though whitening agents release a great amount of oxygen into the tooth, existing bonds are not weakened.6,7

    However, if whitening before bonding, allow a period of 7–10 days after whitening. The high concentration of oxygen in the tooth could significantly and adversely affect polymerization of the resins.8,9

  • How long do teeth whitening results last?

    Teeth whitening results are very stable, but depending on the patient’s nutrition and lifestyle habits, the procedure may need to be redone periodically. Due to the safety of the teeth whitening agents, this should not concern the dentist or patient.

  • Will teeth whitening cause sensitivity?

    Tooth sensitivity can occur as a result of whitening. If sensitivity occurs, it is transient and disappears after the completion of whitening treatments. If desensitizing treatments are desired, we recommend the use of UltraEZ desensitizing gel or Enamelast fluoride varnish. Opalescence Whitening Toothpaste Sensitivity Formula can also be used to help to prevent or lessen sensitivity if it occurs.

Research & Studies

Carbamide peroxide whitening of nonvital single discolored teeth: case reports.

Caughman WF, Frazier KB, Haywood VB. Carbamide peroxide whitening of nonvital single discolored teeth: case reports. Quintessence Int. 1999;30(3):155-61.

http://www.ncbi.nlm.nih.gov/pubmed/10356567Caughman WF, Frazier KB, Haywood VB.

History, safety and effectiveness of current bleaching techniques and applications of the nightguard vital bleaching technique.

Haywood VB. History, safety and effectiveness of current bleaching techniques and applications of the nightguard vital bleaching technique. Quintessence Int. 1992;23(7): 471-488.


Spectrophotometric evaluation of color alterations with a new dental bleaching product in patients wearing orthodontic appliances.

Jadad E, Montoya J, Arana G, Gordillo LA, Palo RM, Loguercio AD. Spectrophotometric evaluation of color alterations with a new dental bleaching product in patients wearing orthodontic appliances. Am J Orthod Dentofacial Orthop. 2011;140(1):e43-7.

http://www.ncbi.nlm.nih.gov/pubmed/21724070 Jadad E, Montoya J, Arana G, Gordillo LA, Palo RM, Loguercio AD.
  1. Grobler, S.R., et al. A Clinical Study of the Effectiveness of Two Different 10% Carbamide Peroxide Bleaching Products: A 6-Month Follow-up; Int J Dent. May 5, 2011: 167525; doi: 10.1155/2011/167525.
  2. Data on file.
  3. Haywood, VB. Orthodontic caries control and bleaching. Inside Dentistry. April 2010;2–6.
  4. Haywood VB, Leonard RH, Dickinson GL. Efficacy of six months of nightguard vital bleaching tetracycline-stained teeth. J Esthet Dent. 1997;9(1):13-19.
  5. Kwon SR, Wertz PW. Review of the Mechanism of Tooth Whitening. J Esthet Restor Dent. 2015 Sep-Oct;27(5):240-57.
  6. Klukowska M, White DJ, Kozak KM, Zoladz JR, Baker RA, Garcia-Godoy F, et al. Effect of bleach on microleakage of Class V composite restorations. J Dent Res. 85(Spec Iss B):0035, 2006 (www.dentalresearch.org).
  7. Angerame D, Garaffa S, Maglione M, Di Lenarda R, De Stefano Dorigo E. Effect of in-office bleaching on Class V composite restorations seal. J Dent Res. 84(Spec Iss A):3013, 2005 (www.dentalresearch.org).
  8. Wilson D, Xu C, Hong L, Wang Y. Effects of clinical factors during tooth whitening on enamel. J Dent Res. 86(Spec Iss A):2632, 2007 (www.dentalresearch.org).
  9. Lim B-S, Ryu I, Lee Y-K, Rhee S-H, Yang H-C, Ahn S-J et al. Effect of bleaching agent on shear bond strength to dentin. J Dent Res. 85(Spec Iss B):0036, 2006 (www.dentalresearch.org).