What is the per centage of peroxide

Hydrogen Peroxide 9.5%. Compare to 10% for {Professional Effects, Vivid, 1 Hour Express}; total amount of peroxide on each strip also matters.

Can you drink coffee while doing this? Or do you have to give up the yummy caffeine?

I'm afraid it's a bad idea to drink coffee while using the whitestrips. I for instance only use them once a week, but as I can't and don't want to give up coffee, I always brush my teeth right after I've had my last sip (literally!).

This is very individual dependent, but my wife and I did these prior to our wedding and I never went over the recommended time, whereas my wife would routinely go 20 min over. I never had any pain or discomfort; she would frequently mention sensitivity to hot/cold food. That said, her teeth sensitivity went away a week after finishing them.

Must I use all of the pouches in order to see results? Or may I use a few and share the rest with someone else?

I saw results in my teeth after 3 days and even more after a week. If you're happy with your results after a week then you could definitely share.

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3DWhitestrips 1 Week Smile Transformation At-Home Teeth Whitening Kit, 14 Treatments, 8 Levels Whiter in 1 Week

Product ID: 668747

Details

Active Ingredients
Hydrogen
Brand
Crest
Item Form
Strip
Number of Items
28
Product Benefits
Whitening

⏳8 levels whiter in 7 days

🔒Advanced Seal Technology no-slip grip

🦷Enamel-safe dentist-grade formula

¥12049

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

✨ Unlock your brightest smile in just 7 days! 🦷

DOUBLE THE GLOW - Includes two full 1-week treatments so you can maintain a dazzling smile twice a year with ease.
STAY PUT COMFORT - Advanced Seal Technology ensures strips stay firmly in place—whiten confidently while you talk or sip water.
RAPID RADIANCE BOOST - Achieve up to 8 shades whiter in just one week—because your smile deserves the spotlight.
ADA APPROVED ASSURANCE - Backed by the American Dental Association for safety and effectiveness—whiten with confidence.
DENTIST TRUSTED FORMULA - Uses the same hydrogen peroxide whitening ingredient trusted by dental professionals for safe, effective results.

Crest 3DWhitestrips 1 Week Smile Transformation is a professional-grade, enamel-safe teeth whitening kit that delivers up to 8 levels of whitening in 7 days. Featuring Advanced Seal Technology for a no-slip fit, it allows comfortable wear while talking or drinking. ADA accepted and using the same hydrogen peroxide formula as dentists, this kit includes 28 strips for two full treatments, making it perfect for biannual smile maintenance.

Specifications

ASIN	B001OOLLVS
ASIN	B001OOLLVS
Active Ingredients	Hydrogen Peroxide
Age Range Description	Adult
Best Sellers Rank	#11,051 in Health & Household ( See Top 100 in Health & Household ) #11 in Teeth Whitening Strips
Brand Name	Crest
Customer Reviews	4.5 4.5 out of 5 stars (15,721)
Date First Available	February 24, 2009
Flavor	Unflavored
Global Trade Identification Number	00889714000052
Included Components	Applicator
Item Dimensions	1.64 x 5.5 x 5.65 inches
Item Form	Strip
Item Weight	1.6 ounces
Item model number	3700020179
Manufacturer	Procter & Gamble
Manufacturer	Procter & Gamble
Manufacturer Part Number	3700020179
Model Number	3700020179
Number of Items	28
Package Size Name	28 Strips
Product Benefits	Whitening
Product Dimensions	1.64 x 5.5 x 5.65 inches; 1.6 ounces
Set Name	Glamorous White 28 Strips
UPC	889714000052
Unit Count	28 Count

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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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TrustScore 4.5 | 7,300+ reviews

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¥12049

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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

1 day ago

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

2 days ago

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