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 Refill Kit (2 Packs / 4 Syringes) Carbamide Peroxide. Made, Unflavored. Tooth Whitening Refill Syringes - B-5402-2

Product ID: 597930728

Details

Active Ingredients
Carbamide
Brand
ULTRADENT
Item form
Gel
Number of Items
4
Product benefits
Teeth

⏳Whiten up to 10 shades in 7 days

⚡20% Carbamide Peroxide Power

🦷Compatible with Invisalign & custom trays

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€ 77.06

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

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Description

✨ Brighten Boldly, Smile Confidently 😁

AWARD WINNING TRUST - Backed by 30+ years of expertise, 50+ awards, and recommended by 25,000+ dental pros worldwide.
TRAY FRIENDLY FORMULA - Sticky, viscous gel stays put in Invisalign, retainers, or custom trays for maximum effectiveness.
FAST VISIBLE RESULTS - Brighten your smile up to 10 shades in just one week—because waiting is so last year.
HEALTH CONSCIOUS CLEAN - Gluten-free, vegan, and sweetened with xylitol to protect your enamel and reduce decay risk.
PROFESSIONAL GRADE WHITENING POWER - Experience dentist-level results from the comfort of your home with 20% carbamide peroxide gel.

ULTRADENT Opalescence 20% Teeth Whitening Refill Kit delivers professional-level whitening with a potent carbamide peroxide formula that whitens teeth up to 10 shades in 7 days. Designed for use with custom trays including Invisalign, its sticky gel ensures secure application without LED lights. This gluten-free, vegan, and xylitol-sweetened gel is trusted by dental professionals and backed by decades of award-winning innovation.

Specifications

ASIN	B00517M974
ASIN	B00517M974
Active Ingredients	Carbamide Peroxide
Age Range Description	Adult
Best Sellers Rank	#55,700 in Health ( See Top 100 in Health ) #63 in Teeth Whitening Kits
Brand Name	ULTRADENT
Customer Reviews	3.9 3.9 out of 5 stars (48)
Customer reviews	3.9 3.9 out of 5 stars (48)
Flavor	Unflavored
Global Trade Identification Number	00883205039651
Included Components	Syringe, Gel
Item Form	Gel
Item Weight	0.03 Kilograms
Item model number	5402
Manufacturer	Ultradent
Manufacturer	Ultradent
Manufacturer Part Number	5402
Material Features	Gluten Free
Material Type Free	Gluten Free
Model Number	5402
Number of Items	4
Package Dimensions	17.4 x 7.49 x 5 cm; 32 g
Product Benefits	Teeth Whitening Treatment
UPC	883205039651
Unit Count	4.8 Milliliters

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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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€ 77.06

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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2 weeks ago

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