How to prep teeth for whitening strips?

Author: Rossie Schulist  |  Last update: Saturday, April 19, 2025

Before you apply white strips, it is critical that you brush your teeth with a wet toothbrush (without fluoridated toothpaste, or without toothpaste at all). This will allow the pores in your teeth to open, thereby making them more receptive to the whitening agent in the whitening strips.

Are you supposed to brush your teeth before using whitening strips?

Brushing before applying the strips can help to ensure a clean surface for better adhesion and effectiveness, while brushing after using the strips can help to remove residual gel and maintain oral hygiene.

How do you prep for Crest White Strips?

Do NOT brush immediately BEFORE applying strips. To avoid gum irritation, allow for some time to pass after you have brushed your teeth to apply strips.

How do you get the best results from teeth whitening strips?

Here are six tips to ensure you use them properly and maximize your whitening results:
  1. Brush Your Teeth Prior To Application (Not After). ...
  2. Make Sure Your Teeth Are Completely Dry Before Applying The Strips. ...
  3. Avoid Uneven Whitening. ...
  4. Follow The Instructions Closely. ...
  5. Avoid Contact With Your Gums.

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.

How To Use Whitening Strips!

How do you get the best results from teeth whitening?

During the entire process of whitening, we sometimes advise to change your diet and avoid tooth staining foodstuffs such as tea, coffee, red wine and curry. Avoid smoking if possible. Maintain good oral hygiene. Tooth surfaces close to your gums might take longer to whiten; however, you shouldn't worry too much.

What is the best time of day to use whitening strips?

Should You Use Whitening Strips In The Morning Or Night? Whether you choose to use whitening strips in the morning or at night depends on your personal preference and lifestyle. There is no strict rule regarding the time of day you should use them.

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.

What not to do after using Crest White Strips?

A. Avoid Acidic and Staining Foods: Acidic and staining foods such as citrus fruits, tomatoes, and berries can compromise the results of teeth whitening and increase the risk of enamel erosion and staining. Limit consumption or rinse your mouth immediately after consuming such foods.

What happens if I don't brush my teeth before whitening?

We recommend that with any form of whitening that teeth are brushed beforehand. This is to ensure that any plaque (this sticky surface layer on your teeth) is removed and that any whitening agent present in the strips or gel gets the closest contact with the teeth.

How long should you wait to eat after using whitening strips?

Wait for about 30 minutes after removing the whitening strips before brushing your teeth with a soft-bristled brush and fluoride toothpaste to ensure the effectiveness of the whitening agents. Once the strips are removed, avoid eating or drinking anything that will cause staining to the teeth for at least an hour.

Do I use crest 3D white strips every day?

The strips are applied to upper and lower teeth, once a day, for up to 30 minutes. Depending on the specific Crest 3D White Whitestrips product chosen, strips should be applied daily for anywhere from 10 to 20 consecutive days.

What not to do before teeth whitening?

Don't Eat Foods and Beverages That May Stain Your Teeth

Foods and beverages that stain can deposit a layer of pigments on the enamel. This layer can interfere with the whitening agents, making them less effective during the procedure.

Do I dry teeth before whitening?

Part of the preparation of our in-office treatment is to dry the teeth before applying the whitening gel. If you are using a home kit, be sure to dry your teeth before you insert each tray. The best trays will make a seal at their edge to keep bleaching gel and saliva separate.

Can you close your mouth with whitening strips?

If the strips begin to slip, close your mouth and create suction to tighten the strips up again. Don't touch the strips excessively with your tongue. You can try gently tucking the strip in the spaces between your teeth with your fingernail, then folding it behind your teeth.

Do I brush after whitening strips?

While it may be tempting to brush immediately after using strips, it's best to wait for your enamel to recover before brushing gently with a sensitive toothpaste. By following these guidelines, you can enjoy a radiant smile without compromising your dental health.

Will my teeth go back to yellow after whitening?

With time, these tannins cling to your teeth's enamel and create yellowish stains. Similar to this, frequent use of tobacco products or cigarette smoking might cause your teeth to remain yellow even after whitening procedures. A yellow coating on your tongue could also be noticed.

How to make white strips more effective?

Wait at least 30 minutes after brushing your teeth to apply White Strips. They'll stick better if your teeth aren't glossy and smooth after a brush. If you need to brush beforehand to remove food particles, use a wet toothbrush with no toothpaste or use a fluoride-free toothpaste.

Is it better to whiten teeth at night or morning?

They can advise you on the best time to whiten your teeth, based on your individual needs. Consider your lifestyle: If you have a busy lifestyle, you may want to consider whitening your teeth at night so that you can avoid any potential sensitivity during the day.

Do I rinse my mouth after whitening strips?

Rinsing your mouth after using whitening strips can help remove excess whitening gel. However, avoiding immediate use of mouthwash containing certain ingredients that may affect the whitening process is advisable. Brushing remains the recommended practice for comprehensive cleaning.

How long do teeth pores stay open after whitening?

The pores slowly close over the next two to three days, but during that time, your teeth are more susceptible to staining from foods and drinks. For at least the first 48 hours, it's best to avoid darkly colored foods and drinks, including berries, coffee, tea, red wine, and tomato sauce.

What is the most powerful way to whiten teeth?

Dentists can treat you with 6% hydrogen peroxide (the bleaching agent that whitens teeth) – this is nearly 6,000 times stronger than any over-the-counter tooth whitening product. Because of this, tooth whitening by a dentist will give you the very best results.

Does saliva stop teeth whitening?

If your whitening trays are not well sealed, then saliva may be able to get into the trays. If this happens, there is an enzyme in the saliva which will neutralise the peroxide in the gel and render it useless, so your teeth will not whiten.

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