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.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Opalescence 20% Teeth Whitening Gel Refill Syringes, with PF (4ct) 5402-2 | 20% Carbamide Peroxide with Potassium Fluoride Mint Whitening Gel for Custom Trays. Low-Sensitivity Formula. Made in the USA

Product ID: 478078082

Details

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

💎20% Carbamide Peroxide for pro-level whitening

🦷Potassium Fluoride for sensitivity relief

✈️Compact 4-pack syringes, travel-friendly

51339CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

Description

✨ Brighten your smile, boost your confidence — no compromises needed! 🦷

NO FUSS NO LED LIGHTS - Effortless application with syringe gel—no need for messy trays or special lights.
ULTRA FIT COMPATIBILITY - Works seamlessly with Invisalign, retainers, and custom trays for a perfect fit every time.
TRUSTED BY PROFESSIONALS - Backed by 30+ years of expertise and recommended by over 25,000 dentists worldwide.
GENTLE ON SENSITIVE TEETH - Formulated with potassium fluoride and xylitol to reduce sensitivity and protect enamel.
AWARD WINNING WHITENING POWER - Clinically proven to brighten teeth up to 10 shades in just 7 days.

Opalescence 20% Teeth Whitening Gel Refill Syringes deliver professional-grade whitening with a potent 20% carbamide peroxide formula enhanced by potassium fluoride for sensitivity relief. This vegan, gluten-free, and kosher gel fits custom trays and aligners, offering up to 10 shades whiter teeth in just one week without the need for LED lights. Trusted by over 25,000 dental professionals and backed by 30 years of research, it’s the go-to choice for effective, comfortable, and convenient at-home whitening.

Specifications

ASIN	B00517M974
ASIN	B00517M974
Active Ingredients	Carbamide Peroxide
Age Range Description	Adult
Best Sellers Rank	#146,069 in Health & Household ( See Top 100 in Health & Household ) #132 in Teeth Whitening Kits
Brand Name	ULTRADENT
Customer Reviews	4.0 4.0 out of 5 stars (50)
Date First Available	November 24, 2011
Flavor	Unflavored
Global Trade Identification Number	00883205039651
Included Components	Syringe, Gel
Item Form	Gel
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
UPC	883205039651
Unit Count	4 Count

Common Questions

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Ayesha M.

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

5 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

51339CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews