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Opalescence

Opalescence 35% Gel Syringes Teeth Whitening - Refill Kit (4 Syringes Total) Carbamide Peroxide. Made by Ultradent, in Melon Flavor. Tooth Whitening Refill Syringes 5404-2

  • Based on 188 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 8
Order within 1 hour and 23 minutes
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Description

Teeth Whitening Systems Watch video to see best practices on how to use your Opalescence syringes. 10% Gel Syringes is the best option for highly sensitive teeth. 15% Gel Syringes is the best option for sensitive teeth. 20% Gel Syringes is the best option for user who want are somewhat sensitive teeth but are also interested in maximizing whitening results. 35% Gel Syringes is the best option maximizing whitening results without concern for sensitivity needs. Original Toothpaste 3Pack Sensitive Relief 3Pack Opal Classic Trays Pack Opal Gentle Trays Pack Opal Gel Syringes 15% Opal Gel Syringes 20% Opal Gel Syringes 35% Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store

Is Discontinued By Manufacturer ‏ ‎: No


Package Dimensions ‏ ‎: 6.57 x 2.72 x 1.69 inches; 1.31 ounces


Date First Available ‏ ‎: May 1, 2015


Manufacturer ‏ ‎: Ultradent


ASIN ‏ ‎: B00WZ2M4I2


Best Sellers Rank: #68,164 in Health & Household (See Top 100 in Health & Household) #54 in Teeth Whitening Gels


Customer Reviews: 4.6 4.6 out of 5 stars


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great product!
Size: 0.04 Fl Oz (Pack of 4)
Great product, really does a great job at whitening your teeth and the white lasts long just like treatment at a whitening center. Does make your gumline a lil tender so be careful not to let it sit on your gums. Overall glad I got it great product. Does it's job well
Reviewed in the United States on May 19, 2026 by Susie
    • Works better that any other I have tried
Size: 0.04 Fl Oz (Pack of 4)
Love this product! Removes coffee stains! Just a heads up 45% will burn your gums. Stay 35% and below.
Reviewed in the United States on May 23, 2026 by Rose
    • Great for teeth whitening
Size: 0.04 Fl Oz (Pack of 4)
Works good but you definitely have to do more than one treatment. And if your teeth can stand it, try and keep them on for the entire hour.
Reviewed in the United States on May 14, 2026 by Alola Epps
    • Works if you stick with it.
Size: 0.04 Fl Oz (Pack of 4)
Couldn’t really tell a difference. I didn’t really stick with it. But my younger sister tried it and her teeth look stunningly white. And she’s a smoker. I was shocked. They really do look stunning. We’re both in our 50’s.
Reviewed in the United States on January 24, 2026 by Lisa Medley
    • Melon Flavor Highly Recommended
Size: 0.04 Fl Oz (Pack of 4)
This item does whiten teeth is a short amount of time. My dentist made my trays a couple of years ago. Their products are expensive, but I found this whitener on Amazon. Works as well as the product directly from my dentist at a fraction of the cost. Highly recommended.
Reviewed in the United States on March 22, 2026 by Susie in SoCal
    • Great stuff!!!
Size: 0.04 Fl Oz (Pack of 8)
Great stuff!!!
Reviewed in the United States on April 23, 2026 by Nicholas Bleu
    • Burned my gums ! Burned my gums !
Size: 0.04 Fl Oz (Pack of 4)
Review Image by ThankGodforFreeShipping
It does work somewhat as far as whitening but as soon as I put it on with my Invisalign there was a foaming crackling sound and it was super uncomfortable and I wanted to take off the retainer straight away but I barreled through. Taking it off 25 min later I see my gums are white, swollen, and irritated. Probably won't get this strength again ! ... show more
Reviewed in the United States on August 30, 2024 Reviewed in the United States on August 30, 2024 by ThankGodforFreeShipping
    • Melon-Fueled Smile Magic (with a Side of Tingle)
Size: 0.04 Fl Oz (Pack of 4)
Been using this Opalescence 35% gel twice a week overnight in my Invisalign trays and—wow—this stuff works. As a card-carrying coffee addict, my teeth were starting to look a little too espresso-forward, but now they’re gleaming like I’ve never touched a latte. That said, 35% is no joke. Leaving it on for 10–12 hours definitely brings the brightness, but also brings the zing—hello sensitive teeth and slightly angry gums for a couple days. It’s like my mouth goes through a bit of a whitening boot camp, but hey, no pain, no pearly gain? Melon flavor is... interesting. Not bad, just kind of a weird moment when your mouth tastes like fruit salad while your teeth are turning snow-white. Would I do it again? Yep. Already did. Just maybe not right before a big bowl of ice cream. ... show more
Reviewed in the United States on June 21, 2025 by AJS

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