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

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

Product ID: 478078082

Details

Active Ingredients
Carbamide
Brand
ULTRADENT
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

245.83 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.

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Are the products genuine and authentic?+

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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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

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

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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245.83 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

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

Asin	B00517M974
Best Sellers Rank	#136 in Teeth Whitening Kits
Date First Available	November 24, 2011
Item Model Number	5402
Manufacturer	Ultradent
Package Dimensions	6.85 x 2.95 x 1.97 inches; 1.13 ounces

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

Details

Details

Description

Specifications

Common Questions