What is the best way to use Crest whitening strips?

Author: Ila Green  |  Last update: Thursday, October 9, 2025

Although they're generally considered safe, these products contain some chemicals that can irritate the gums and mouth. The best way to use whitening strips is to cut them to the exact height of your teeth and apply them to your teeth, avoiding touching the gums as much as possible.

How do you use crest Whitestrips for best results?

The correct way to use Crest Whitestrips
  • Wipe your teeth dry with a dry index finger.
  • Carefully apply each strip and push firmly onto your teeth.
  • Keep them on for 10 minutes past the recommended 30 minutes -- it's like getting extra credit!
  • Peel them off carefully and wipe teeth clean again with a dry index finger.

Is it better to use Crest whitening strips before or after brushing teeth?

5. Wait before applying Whitestrips: It's essential to wait 30 minutes after brushing before applying Whitestrips. Brushing can temporarily weaken your enamel, making it more sensitive. Waiting allows your teeth to recover and minimizes the risk of sensitivity.

How do you maximize the effectiveness of whitening strips?

Brushing your teeth thoroughly ensures the removal of any plaque or debris. This cleanliness is key as it allows the whitening agent in the strips to come into direct contact with the tooth enamel, enhancing effectiveness and ensuring even coverage.

How do you make whitening strips the most effective?

Make sure the strip covers your teeth entirely, working out any bumps or uneven areas. Try drying the surface of your teeth with a napkin or towel before applying the strips. This will help increase the whitening effectA tooth brush can be used to smooth the strip out if needed.

How To Use Whitening Strips!

Why do crest white strips not work?

Teeth Are Not Clean

The chemicals break down the stain molecules that cause teeth to darken. Plaque buildup can block these whitening chemicals from reaching the stained teeth. Schedule a dental cleaning appointment first before using teeth whitening strips. This can prepare your teeth well for the whitening process.

Why are my teeth more yellow after whitening strips?

Whitening strips often contain peroxide-based chemicals to eliminate enamel stains, which may lead to temporary irritation and redness of the gums. This redness creates a visual contrast that can make the teeth seem more yellow.

What not to do when using whitening strips?

Do not touch your gums with the whitening strips. The whitening agent in whitening strips can be harmful to your gums. Particularly, this agent can damage the soft tissue in your gums, which can lead to a wide array of oral health issues down the road. Apply whitening strips evenly.

What makes whitening strips work better?

As a general rule, products with higher levels of hydrogen peroxide tend to work more quickly and effectively but may also cause greater tooth sensitivity. However, most products do not disclose hydrogen peroxide levels. If your goal is professional-level whitening, try Crest 3DWhitestrips Glamorous White.

What happens if you leave whitening strips on longer than 30 minutes?

You might be tempted to leave whitening strips on your teeth for a little longer, but this will increase the risk and severity of side effects like sensitivity and gum irritation. In some cases, overuse of whitening strips has even led to chemical burns on the gums.

Why are my teeth sticky after whitening strips?

Removing Residual Gel: Whitening strips can leave a sticky residue on your teeth. Brushing after use helps remove this gel, ensuring your mouth feels clean and fresh. Maintaining Oral Hygiene: Brushing helps remove any plaque or food particles that may have accumulated during the day.

Should I brush my teeth before or after breakfast?

Tooth Brushing: Before or After Breakfast

By brushing before breakfast, you don't allow the bacteria from breakfast add to the plaque already formed. Brushing your teeth before breakfast also lowers the risk that the enamel will be damaged.

Do I rinse after whitening strips?

Yes, it is recommended to rinse your mouth after whitening strips to remove any excess whitening gel that may have remained on your teeth. Be sure to use lukewarm water and rinse for at least 30 seconds.

Do I brush my teeth after I use crest white strips?

Yes, after using Whitestrips, you can brush gently.

Is it better to use whitening strips in the morning or at night?

Using whitening strips before bed might be more convenient for some people, as it allows the product to work overnight without interference from food or beverages. On the other hand, using them in the morning can help you start your day with a refreshed, brighter smile.

How to get the best results from crest whitestrips?

The best way to use whitening strips is to cut them to the exact height of your teeth and apply them to your teeth, avoiding touching the gums as much as possible. Avoid UV lights, which can increase sensitivity and possibly cause damage to the teeth.

What is the disadvantage of whitening strips?

Frequent application of the whitening strips may even cause the discoloration to be permanent. Spotting on the teeth is also possible. White spots could appear on the surface of the teeth due to the hydrogen peroxide. It can make the teeth look bad and unhygienic.

Do teeth go back to normal after whitening?

Now, the big concern: do teeth go back to their original colour after whitening? The answer is that they can, but not immediately and only sometimes wholly. Gradual Fading: Over time, the whitening effects can fade.

Can you swallow saliva while using whitening strips?

Yes, you can swallow your saliva while using whitening strips, as most bleaching agents in the strips are safe for oral use and ingestion in small amounts. But you do not need to swallow excessive amounts of saliva while using the strips.

Why keep teeth whitening in the fridge?

Constant refrigeration virtually stops breakdown of whitening gels. More importantly, refrigeration protects whitening gels against the potency-robbing damage of heat during storage and shipping.

What to do with teeth after whitening strips?

Rinse: Rinse your mouth as soon as possible to minimize the risk of stains if you drink coffee, tea, red wine, or cola, or eat foods that are likely to stain your white teeth. Brush: Upgrade your regular brushing routine with a whitening toothpaste to continuously help promote a brighter smile.

Can yellow teeth become white again?

Yellow teeth can regain whiteness through various methods, including good oral hygiene, professional dental cleanings, and teeth-whitening treatments. Stains from coffee, tea, or tobacco can be removed with adequate oral care, while professional procedures like bleaching or laser treatments offer quicker results.

How long does it take for teeth pores to close after whitening strips?

Also, avoid acidic foods such as fermented items, vinegar, pickles, and citrus fruits. Although the pores should return to normal size after 48 hours, you can be cautious for a full week to make the most out of your teeth whitening treatment.

Why are my teeth so transparent after whitening strips?

The same goes for improper or excessive teeth whitening treatments. While these methods aim to brighten your smile, they can thin your enamel, leading to a translucent appearance.

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