Making your own glue traps

Cosmetic Dentistry Teeth Whitening

Crest Whitestrips seem like the perfect solution for whiter teeth — they’re convenient, affordable, và more popular than ever.

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But the question is: vị Crest whitestrips really work? và are they safe?

In truth, teeth whitening strips do work to make teeth look whiter and brighter. But before you try them, I want you to understand some of the risks of this teeth whitening method.

So, how vị Crest Whitening Strips (by Procter & Gamble) & similar brands work?


How Crest trắng Strips Work

Crest Whitestrips work by coating the teeth with a gel that contains hydrogen peroxide or carbamide peroxide. The gel is pressed against the teeth for several minutes to penetrate the enamel layer và “bleach” teeth.

These at-home whitening strips use a lower concentration of the same ingredient dentists use to lớn whiten teeth.

Whitening strips are small pieces of an enamel-safe flexible plastic called polyethylene, a common plastic. Each strip is coated with a whitening gel và adhesive to make the strips stay put.

Ingredients in Crest Whitestrips

Crest Whitestrips ingredients include:

WaterGlycerinHydrogen peroxidePolyvinylpyrrolidone (PVP)Carbomer 956Sodium hydroxideSodium saccharinPEG-8Acrylates copolymerPyrophosphate (only in Crest 3d White Whitestrips Stain Shield)Polyethylene (the textured strip)

Hydrogen Peroxide

The European Union (EU) và Canada’s governmental toàn thân classify hydrogen peroxide, the whitening ingredient in Crest Whitestrips, as toxic or harmful when used in the mouth.

It can destroy the oral microbiome, killing off the beneficial bacteria that prevent cavity formation, gum disease, bad breath, & other conditions.

Carbamide và hydrogen peroxide are the only widely used products to lớn whiten teeth down khổng lồ the dentin layer. The most danger occurs when peroxide comes into liên hệ with porous, sensitive gum tissue.

PVP và Carbomer

Crest Whitestrips use polyvinylpyrrolidone (PVP) khổng lồ bind strips lớn teeth. This adhesive is safe, meaning it doesn’t bioaccumulate or disrupt hormones, like many household chemicals.

The strips also contain carbomer, another fairly safe chemical, to increase the adhesion of the gel.

These adhesives may irritate the gums và damage enamel when overused but are considered generally safe.

Sodium Hydroxide

The pH-balancing ingredient in trắng strips, sodium hydroxide, may be somewhat dangerous. It’s considered toxic when used inside the body.

Sodium hydroxide is a “caustic agent,” meaning it corrodes what it touches.

Sodium hydroxide is also used in hair dye. Essentially, just like you can strip your hair too much from over-dyeing it, you can vì the same with teeth. (Instead of brittle hair, think: sensitive teeth.)

Sodium Saccharin

Saccharin isn’t my first choice as a sweetener — xylitol và erythritol are much better low-calorie sugar substitutes for dental health.

However, saccharin is not dangerous according to lớn the best available scientific evidence. It was once banned because it was believed to lớn cause bladder cancer in animals but has since been unbanned around the world.

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In some individuals, PEG-8 may cause hives on contact with sensitive tissue lượt thích the cheeks, gums, or tongue.

The EWG also warns that PEG-8 is frequently contaminated with more dangerous chemicals like 1,4-Dioxane, a potential carcinogen.

Acrylates Copolymer

Acrylates copolymer is a polymer that holds each upper và lower strip together during use. On its own, this ingredient is considered fairly safe.

However, acrylates copolymer are often contaminated with ingredients that irritate the skin, eyes, & mouth.


Pyrophosphate is used as the “tartar protection” in Crest 3d White Whitestrips Stain Shield. Unfortunately, multiple studies have repeatedly shown that pyrophosphate does not reduce buildup of plaque or tartar/calculus.

Are Crest Whitestrips safe?

Crest Whitestrips are safe for very occasional use. However, if you vì not use them correctly or use them too often, these whitening products may cause damage lớn your teeth or gums.

I bởi not recommend patients use Crest Whitestrips more than once every 5 years.

The American Dental Association (ADA Council) has approved Crest 3d White Glamorous white Whitestrips as “safe and effective” for at-home teeth whitening. This is called a “cosmetic certification”.

A UV light, included in certain teeth whitening kits from Crest, can cause severe tooth sensitivity. This may go away within a few days khổng lồ one week.

In fact, UV lights don’t seem lớn increase the whitening effect of peroxide beyond a week or two. There is some evidence that UV lights with peroxide may damage the pulp of your tooth, which could potentially lead khổng lồ painful toothaches or the need for a root canal.

One problem — but not a safety concern — with Crest Whitestrips is that they may leave yellow or greyish spots because they don’t always adhere to surfaces of teeth evenly.

How khổng lồ Use Crest Whitestrips

To use Crest Whitestrips và minimize your risk of safety concerns:

Do not brush your teeth before using white strips.Remove an upper strip và lower strip from their packets.Cut each strip khổng lồ the exact height for your teeth.Peel off the plastic covering the adhesive layer.Gently place each strip on your teeth. Avoid letting strips cảm ứng the gums.Leave the strips on your teeth for the number of minutes listed on the box (usually 5 minutes or fewer).Remove the strips.Rinse your mouth with water or coconut oil.Do not brush your teeth for at least 2 hours.Repeat up to lớn 2 times per day. Bởi not exceed the number of days recommended on the box.

For faster results, you can buy Crest 3d Whitestrips, the most powerful Crest Whitestrips. These are designed lớn stay on the teeth for 30 minutes và whiten quickly in just one use.

Some of these whitening kits come with UV lights lớn “speed” the process.

You should not brush your teeth before or after using whitening strips. Brushing before using trắng strips can increase tooth sensitivity, and brushing afterwards risks pressing the abrasive chemicals into the enamel of your teeth.