where do you get those things the dentist uses to prevent the Carbamide Peroxide from touching the gums? I hate how these burn and recede the gum line

You should only use about 1/3rd of the syringe per tray. If it is squishing up and out you are using too much.

Do you need to use a teeth remineral gel after use? If so , how does one do that procedure?

I first used this stuff when my dentist gave it to me many years ago and now here it is on Amazon. I have never used a remineral gel.

what is the expiration (or use by) date on the item i will receive?

I bought them in July/August 2019: My expiration date was 2021.03.31.

Is this percentage(15%) to strong for sensitive teeth.?

If your teeth are sensitive use Sensodyne toothpaste as your regular routine for a couple weeks before using 15% and that should help. That’s what we give our patients.

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Opalescence 15% Carbamide Peroxide Teeth Whitening Gel Syringes - 5195-2 | (4 Units) Refills for Trays. Low-Sensitivity Formula, Mint, Developed by Dentist. Made in USA by Ultradent.

Opalescence 15% Carbamide Peroxide Teeth Whitening Gel Syringes - 5195-2 | (4 Units) Refills for Trays. Low-Sensitivity Formula, Mint, Developed by Dentist. Made in USA by Ultradent.

Product ID: 15463552

Details

Active Ingredients
Carbamide
Brand
Opalescence
Item Form
Gel
Number of Items
4

⚡15% Carbamide Peroxide for fast whitening

🌿Low-sensitivity, dentist-developed mint formula

🦷Compatible with Invisalign & custom trays

¥11104

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

✨ Brighten your smile, boost your confidence, and join 100 million glowing grins! 🦷

GENTLE YET POWERFUL - Low-sensitivity formula enriched with xylitol to protect enamel and reduce tooth decay risk.
NO LED LIGHT NEEDED - Effortless whitening with gel-filled syringes designed for easy tray application—no extra gadgets required.
AWARD WINNING EXPERTISE - Backed by 30+ years, 50+ awards, and trusted by 25,000+ dental pros worldwide.
PRO LEVEL WHITENING AT HOME - Achieve up to 10 shades whiter teeth in just 7 days without stepping into a clinic.
SEAMLESS TRAY COMPATIBILITY - Works perfectly with Invisalign, retainers, and custom whitening trays for a personalized fit.

Opalescence 15% Carbamide Peroxide Teeth Whitening Gel Syringes deliver professional-grade whitening in the comfort of your home. Developed by dentists and made in the USA, this low-sensitivity, mint-flavored gel whitens teeth up to 10 shades in 7 days without the need for LED lights. Compatible with Invisalign and custom trays, it features a sticky viscous formula enhanced with xylitol to protect enamel and minimize sensitivity, trusted by over 25,000 dental professionals and 100 million users worldwide.

Specifications

ASIN	B00VQTM43A
ASIN	B00VQTM43A
Active Ingredients	Carbamide Peroxide
Age Range Description	Adult
Best Sellers Rank	#13,116 in Health & Household ( See Top 100 in Health & Household ) #13 in Teeth Whitening Gels
Brand Name	Opalescence
Customer Reviews	4.5 4.5 out of 5 stars (2,800)
Date First Available	October 1, 2004
Flavor	Mint
Included Components	Syringes
Item Dimensions	6 x 3.5 x 1 inches
Item Form	Gel
Item Weight	1.28 ounces
Item model number	5397-U/2pack
Manufacturer	Ultradent Products Inc.
Manufacturer	Ultradent Products Inc.
Manufacturer Part Number	5397-U/2pack
Material Features	Allergen-Free
Material Type Free	Gluten Free
Model Number	5397-U/2pack
Number of Items	4
Product Benefits	Dentist Created Formula, Enamel Protection, Low Sensitivity, No LED Light Required, Nonabrasive Whitening, Professional Quality Teeth Whitening, Fast Whitening Results, Shorter Wear Time, Works on Discolored Teeth, No LED Light Needed, Sticky Viscous Gel, Helps Minimize Gel Migration, Easy Syringe Application, Compatible With Custom Whitening Trays, Xylitol Enhanced Formula
Product Dimensions	6 x 3.5 x 1 inches; 1.28 ounces
Set Name	Opal by Opalescence Complete Refill Kit

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥11104

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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