How long can you leave 20% on???

I have no problem leaving it on 4-5 hours. I moved up to 20% after years of using the 15% overnight.

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Opalescence 20% Teeth Whitening Gel Refill Syringes, with PF (4ct) 5402-2

Product ID: 478078082

Details

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

⏳2-4 hours daily wear for up to 10 shades whiter

💉4 x 1.2mL carbamide peroxide syringes

🇺🇸Made in USA, trusted by 25,000+ dentists

247.53 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

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Description

✨ Brighten Your Smile, Boost Your Confidence 💼

PRO LEVEL WHITENING AT HOME - Achieve up to 10 shades whiter teeth in just 7 days without leaving your couch.
GENTLE YET EFFECTIVE FORMULA - Includes potassium fluoride and xylitol for sensitivity relief and cavity protection.
UNIVERSAL TRAY COMPATIBILITY - Perfectly fits Invisalign, retainers, and custom trays for seamless whitening integration.
EFFORTLESS NO LED APPLICATION - Carbamide peroxide gel works powerfully with no need for LED lights or complicated trays.
AWARD WINNING DENTIST RECOMMENDED - Backed by 30+ years of expertise, 50+ awards, and 100 million smiles brightened worldwide.

Opalescence 20% Teeth Whitening Gel Refill Syringes deliver professional-grade whitening with a potent carbamide peroxide formula designed for 2-4 hours daily use. This 4-pack refill is compatible with Invisalign and custom trays, offering up to 10 shades of whitening in 7 days. Made in the USA and trusted by over 25,000 dental professionals, it features sensitivity-reducing potassium fluoride and cavity-fighting xylitol, all in a vegan, gluten-free, kosher formula.

Specifications

ASIN	B00517M974
ASIN	B00517M974
Active Ingredients	Carbamide Peroxide
Age Range Description	Adult
Best Sellers Rank	#30,351 in Health & Household ( See Top 100 in Health & Household ) #94 in Teeth Whitening Kits
Brand Name	Opalescence
Customer Reviews	4.5 4.5 out of 5 stars (350)
Date First Available	November 24, 2011
Flavor	Unflavored
Global Trade Identification Number	00883205039651
Included Components	Applicator
Item Form	Gel
Item Highlight	20% Carbamide Peroxide with Potassium Fluoride Unflavored Whitening Gel for Custom Trays. Low-Sensitivity. Made in the USA
Item Weight	0.03 kg
Item model number	5402
Manufacturer	Ultradent
Manufacturer	Ultradent
Manufacturer Part Number	5402
Material Features	Vegan, Gluten Free, Kosher
Material Type Free	Gluten Free
Model Number	5402
Number of Items	4
Package Dimensions	6.85 x 2.95 x 1.97 inches; 1.13 ounces
Product Benefits	Teeth Whitening with Potassium Fluoride, Prefilled Trays, Professional-Strength Formula, Comfortable UltraFit Design, Even Gel Coverage, Molar-to-Molar Coverage, No LED Light Required, Mess-Free Application, Travel-Friendly, Mint Flavor, Backed by Extensive Whitening Research
Set Name	Opalescence 20% Teeth Whitening Gel Refill Syringes (4ct)
UPC	883205039651
Unit Count	4 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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247.53 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews