How To Use Crest White Strips 1 Hour Express?

This blog post will address the topic, “how to use crest white strips 1 hour express” and cover topics like when not to use crest white strips 1 hour express, about whitening strips, how they work, what research says about their efficacy, their potential side effects and safety precautions to be taken while using whitening strips.

How To Use Crest White Strips 1 Hour Express

As the name of the whitening product is Crest White Strips 1 Hour Express, it is obviously used once a day for 1 hour for 7 days.

  1. PEEL — Peel the upper and lower strips and apply them on the upper and lower teeth respectively.
  1. APPLY — Keep the applied peel for 1 hour and make sure not to remove them before 1 hour.
  1. LIGHT — Press and hold the two given side buttons simultaneously for the light to start.
  1. HOLD — Hold the light against strips for 5 minutes and then it will get off.
  1. PEEL OFF — Remove the light and peel off the strips starting from the back teeth.
  1. SMILE — Smile and show your beautiful white teeth to your loved ones.

When Not To Use Crest White Strips 1 Hour Express

You must not use the light device in crest white strips 1 hour express if you:

  • Are diagnosed with cancer of the mouth
  • Are under photodynamic therapy
  • Are under light sensitive medications like aminolevulinic acid
  • Are light sensitive

What are whitening strips?

Whitening strips are an over-the-counter, very thin and invisible teeth whitening product containing peroxide-based whitening gel.

The strips are applied following the instructions printed on the label.

It takes a few days for the initial results to appear and almost 4 months for the final results.

Whitening strips can be uncomfortable on your teeth and gums if not properly used.

Can Whitening Strips Actually Whiten Your Teeth: What Does Research Say?

A study published in the Journal of Esthetic and Restorative Dentistry investigated the tooth whitening effects of various concentrations of carbamide peroxide (CP) gels and 6% hydrogen peroxide (HP) whitening strips.

The study concluded that carbamide peroxide and hydrogen peroxide containing home-use bleaching systems can achieve considerable tooth whitening outcomes.

The amount of whitening depends on the concentration and duration of exposure, the study reported.

Another new clinical research confirms that teeth whitening strips containing 6.5% hydrogen peroxide are effective in lightening the tetracycline stains when used daily for 1 month.

How do Whitening Strips Whiten the teeth?

Whitening strips contain around 6% of peroxide that helps to whiten the teeth. 

Peroxide is a type of bleach. Most strips contain hydrogen peroxide as their main component but some manufacturers may use carbamide peroxide.

Depending on the product’s peroxide concentration and also exposure time printed on the label, you might have to wear the strips for 30 minutes once or twice a day and repeat the process for 14 days or more as instructed.

Do Whitening Strips Have Any Side Effects?

Yes. Whitening strips do have some minimal side effects and can cause gum irritation and oral discomfort if not used as per instructions on the label.

The severity of side effects depend on several factors:

  • peroxide bleach concentration 
  • how long your teeth are exposed to the whitening strips
  • tooth sensitivity history

It is recommended to read and follow the instructions printed on the label and not to use the whitening strips longer than suggested. 

Some side effects that may result if instructions are not followed as recommended:

Tooth Sensitivity

Teeth whitening strips contain bleaching agents that create micro-pores in the enamel and may reach your dentin causing sensitivity and discomfort by irritating the nerves.

Gum Irritation

If you use your teeth whitening strips for a longer time than recommended or wear them incorrectly, peroxide coating in them may irritate your gums.

However, the gum irritation is temporary and will disappear in a few days after stopping or completing treatment.

Tooth Damage

Tooth damage occurs mostly when the teeth whitening strips are overused, resulting in demineralisation and erosion of the layers of the teeth.

How To Prevent Or Reduce The Side Effects Of Whitening Strips?

Tooth sensitivity and Gum irritation are two common and temporary side effects of teeth whitening strips that disappear within one to three days of stopping or completing the treatment.

Tooth sensitivity usually occurs due to overuse or not proper use of whitening strips. On the other hand, gum irritation is a common cause of ill-fitting trays containing whitening gels.

You can prevent or reduce the side effects of teeth whitening strips by following the below mentioned instructions:

  • Reduce the time of wearing the tooth whitening tray from one 60 minute session to two 30 minute sessions
  • As soon as you notice teeth sensitivity, stop the whitening for 2-3 days..
  • Get a high fluoride-containing product from your dentist or pharmacist and apply it to the tray and wear it for 4 minutes before and after using the whitening agent. This will help remineralize the teeth.
  • Use an anti-sensitivity toothpaste that will help soothe your sensitivity
  • Ensure that you are using a safe whitening product

How To Ensure That You Are Using A Safe Whitening Product?

Teeth whiteners are not drugs and therefore not regulated by the FDA. 

Some whitening products have the American Dental Association (ADA) Seal of Acceptance, which confirms that the product meets ADA guidelines for safety and effectiveness. 

According to the ADA, professional consultation is important to ensure safe and effective use of teeth whitening systems.

Are Tooth Whitening Strips Safe And Effective In Children And Adolescents?

A clinical trial study evaluated the efficacy and tolerability of tooth whitening in children and adolescents aged 10 to 18 years with all permanent anterior teeth erupted.

5.3% or 6.5% hydrogen peroxide gel polyethylene strips were administered to the study subjects for 30 minutes two times a day.

Study concluded that hydrogen peroxide produced significantly effective teeth whitening and was well tolerated with minor tooth sensitivity and oral discomfort.

What Are The Best Teeth Whitening Strips Available In The Market?

The best teeth whitening over-the counter strips available in the market are: 

Crest 3D White Glamorous White Whitestrips

These are very convenient to use as indicated by the patients.

The strips contain around 14 percent hydrogen peroxide, and are used once daily for 30 minutes for almost 2 weeks. On proper use, they help to get rid of both extrinsic and intrinsic stains.

Crest 3D Whitestrips Gentle Whitening Kit

Most beneficial for teeth whitening in sensitive teeth as it contains only around 6 percent of hydrogen peroxide.

Must be worn for 2 weeks, once daily.

Correct Way Of Using Teeth Whitening Strips

Read the instructions carefully

Read the instructions on the product carefully as it is recommended to follow them strictly to get the desired white shade of your teeth.

Brush your teeth 30 minutes before applying whitening strips

To avoid trapping any food or bacteria under the strip resulting in poor teeth whitening results. 

Brushing your teeth also allows hydrogen peroxide in the whitener to penetrate your enamel better.

Prepare your strips carefully

Make sure to apply the right strip to the correct location and apply in such a way that the whitening agent contacts the entire surface of your teeth except the gums.

Apply the strips to your teeth after drying out the teeth surface for better results.

Avoid any contact with the gums to prevent discomfort.

Wait patiently till the recommended time printed on the label

Generally, you have to wait for 60 minutes before removing the strips.

Take the strips off after the recommended time and make sure not to keep it for longer than recommended time.

Clean your mouth after using the strips

Clean your mouth with a toothbrush or just water to make sure that no amount of whitening gel is left in your mouth.

Be cautious not to swallow the whitening agent as it may be toxic.

For best results, eat only after an hour.

Repeat the process

Use once daily for 60 minutes at a time for 7 days.

Use the entire kit twice in a year to achieve and maintain your desired shade.

Final results will show up after around 4 months but may also require an in-office treatment by your dentist. 

Caution While Using Teeth Whitening Strips

Don’t Swallow Any Gel From The Strips

Take precaution to not swallow any amount of peroxide. 

If you swallow only small amounts of peroxide, it will pass through the system without causing any toxicity.

Swallowing a considerable amount of peroxide will cause toxicity and may irritate the stomach.

Stop If Sensitivity Occurs

Stop the treatment if sensitivity develops in the gums. 

Sensitivity results due to direct contact of bleaching agent with the gums or overuse of the teeth whitening strips. 

Sensitivity is however temporary and resolves in 2-3 days after stoppage of treatment.

Consult your dentist if sensitivity persists beyond 3 days.

Ask Your Dentist Before Using Any Whitening Product

Consultation with the dentist before starting any procedure is crucial for best results.

Maintain Good Oral Hygiene To Avoid Teeth Staining

Choose An Appropriate Toothbrush

Choosing an appropriate toothbrush is the first and most important step towards toothbrushing. Yet, this is neglected by most of the people.

Toothbrushes with more rounded bristles are soft to your teeth and are considered to be an ideal toothbrush to use. 

Do Not Immediately Brush after Eating Acidic Foods

You must wait for 30 minutes to one hour after consumption of acidic foods and drinks. The acid in the food or drink otherwise may erode the enamel layer and regular habit may cause exposed dentin leading to pain and sensitivity and increased risk of developing cavities.

Use Gentle and Short Strokes When Brushing Your Teeth

Use gentle, short strokes to brush your front teeth and thoroughly clean your mouth without abrading the enamel.

Brush the outside surfaces as well as the back molars and upper areas of your chewing surfaces. Brush the inside surfaces of both top and bottom front teeth by flipping your toothbrush upside down.

Brush your tongue to get rid of any bacteria or plaque.

Use A Fluoride Toothpaste

Fluoride can greatly help achieve oral and dental health by strengthening the tooth enamel, making it more resistant to tooth decay. 

Fluoride reduces the amount of acid produced by the bacteria on your mouth. 

Floss Daily To Get Maximum Benefits Out Of Tooth Brushing

Many people, despite knowing the benefits of flossing daily, just neglect it.

According to a study, flossing is highly effective in reducing the interproximal caries risk. 

Daily floss can help stimulate your gums and reduce plaque leading to lesser inflammation risk.

Consider Mouthwash

Therapeutic mouthwashes as the name suggests have therapeutic action and control dental conditions like gingivitis, tooth decay and periodontal diseases. They also help remove halitosis.

Therapeutic Mouthwashes contain ADA listed active ingredients such as fluoride, peroxide, essential oils, cetylpyridinium chloride, and chlorhexidine, all regulated by the FDA.

Consult Your Dentist Twice In A Year

It is important to get your oral health checked twice every year with an interval of 6 months between two visits.

Your dentist can help remove calculus and locate cavities and will also be able to spot potential oral health issues, if any, and offer treatment solutions.

Whitening Systems Other Than Whitening Strips

There are several teeth whitening options other than whitening strips:

Whitening Toothpastes

Whitening toothpastes remove surface stains and lighten the tooth color by one shade.

Over-The-Counter Whitening Gels

Whitening gels are peroxide-based gels applied directly to the teeth surface with a small brush. 

Whitening Rinses

Whitening rinses are among the newest whitening products available.

Whitening rinses apart from whitening the teeth, also results in fresh breath and prevention of plaque accumulation.

Tray-based teeth whiteners

Tray-based teeth whitening systems can be purchased either over-the-counter or from a dentist, 

It is similar to a mouth-guard tray but has peroxide as a bleaching agent.


This blog post addressed the topic, “how to use crest white strips 1 hour express”. We understood about whitening strips, how they work , what research says about their efficacy, their potential side effects and safety precautions to be taken while using whitening strips.

The article outlined some other whitening products available in the market and also mentioned habits to prevent staining of the teeth.

FREQUENTLY ASKED QUESTIONS (FAQs): How To Use Crest White Strips 1 Hour Express

Should I Brush My Teeth Before Whitening Strips?

Yes. It is critical to brush your teeth before whitening strips. 

Brush your teeth and then wait for at least 30 minutes before applying whitening strips. 

Applying whitening strips immediately after brushing can irritate your gums and cause discomfort. 

Brushing your teeth before using whitening strips, opens the pores in the teeth and makes your teeth more receptive to the whitening agent present in the whitening strips.

Make sure you use a wet toothbrush without a fluoridated toothpaste or any toothpaste at all, before using whitening strips.

When Should I Use Crest White Strips: In The Morning Or At Night?

You can use crest white strips in the morning after breakfast, throughout the day or at night before going to bed.

Avoid using crest white strips immediately before breakfast or before eating because using them creates micro-porosities in the teeth that increases the risk of developing sensitivity and staining.

You must make sure that you eat anything after an hour of using whitening strips.

Can I Brush My Teeth After Using Crest White Strips?

Yes, it is safe and advised to brush gently after using whitening strips, to ensure complete rinsing off the chemicals and prevent the risk of gum irritation and discomfort.

It is also recommended to brush your teeth at least 30 minutes before using whitening strips to remove any plaque.

How often should I use 1 Hour Express Whitestrips?

Use it once a day for 60 minutes. The treatment length according to the crest website is mentioned to last for 7 days.

Use the entire kit twice in a year to achieve and maintain your desired shade.

Can you swallow saliva while using whitening strips?

It is normal that you swallow saliva while using whitening strips. 

Ingesting a small amount of peroxide gel in the whitening strip will cause no harm or side effects.

Ingesting large amounts will however cause nausea and stomach irritation.

Other FAQs about Whitening Strips that you may be interested in.

Is it bad to leave whitening strips on too long?

How long to keep whitening strips on?

What To Do After Whitening Strips?


Crest 3DWhitestrips 1-Hour Express Teeth Whitening Kit

Teeth Whitening. (2019)

Healthline. (2020)

Sulieman, Munther, et al. “Tooth bleaching by different concentrations of carbamide peroxide and hydrogen peroxide whitening strips: an in vitro study.” Journal of Esthetic and Restorative Dentistry 18.2 (2006): 93-100.

Kugel, Gerard, et al. “Daily use of whitening strips on tetracycline-stained teeth: comparative results after 2 months.” COMPENDIUM-NEWTOWN- 23.1A (2002): 29-34.

Donly, Kevin J., and Robert W. Gerlach. “Clinical trials on the use of whitening strips in children and adolescents.” Journal of Esthetic and Restorative Dentistry 17.6 (2005): 382-383.

Is Teeth Whitening Safe? (2019)

Teeth Whitening Strips And Dental Health

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