Should You Brush Before or After Whitening Strips?

Key takeaways

How whitening strips work

Whitening strips are thin, flexible strips coated with a gel that contains hydrogen peroxide or carbamide peroxide. The gel lightens stains in the enamel over time. Strips are applied directly to the teeth and left on for the time listed on the package, which varies by product.

Why oral hygiene matters for whitening

Plaque and food on your teeth can block the whitening gel from reaching the enamel. A clean mouth helps strips work evenly. Regular brushing, flossing and dental cleanings are the foundation of any teeth whitening plan.

Should you brush before using whitening strips?

Yes. Brushing before you apply the strips is generally recommended, for three reasons:

1. Cleaner surface: brushing removes food, plaque and bacteria so the gel can touch the enamel directly, which helps teeth whiten evenly.
2. Less irritation: removing plaque and debris first can help reduce gum irritation and sensitivity.
3. Better fit: strips stick better to clean, dry teeth, so the gel stays in place for the full time.

How to brush before using whitening strips

• Use fluoride toothpaste and a soft-bristled toothbrush.
• Brush gently for two minutes, covering every tooth surface.
• Rinse well to remove toothpaste.
• Dry your teeth with a clean tissue so the strips stick.

Can you brush after using whitening strips?

Yes, but it's best to wait a little while:

1. Rinse away the gel: after you remove the strips, rinse with water to clear away leftover gel.
2. Mind sensitivity: teeth can be a little more sensitive right after whitening. Brushing hard or with an abrasive toothpaste right away can make this worse.
3. Wait about 30 minutes: give your teeth a short break before brushing again.

What to do after using whitening strips

• Remove the strips and throw them away.
• Gently wipe away any leftover gel with a clean finger or soft toothbrush.
• Rinse your mouth well with water.
• Wait about 30 minutes before brushing.

Tips for better whitening results

• Follow the directions: use the strips as often and as long as the package says. Using them longer won't make teeth whiter faster and can cause sensitivity.
• See your dentist first: a checkup makes sure cavities or gum problems are treated before you whiten, and helps you choose the best method.
• Keep up your routine: whitening works best as part of good daily care: brushing, flossing and regular cleanings.

Everyone's teeth are different. If you have sensitive teeth, fillings or crowns on front teeth, or questions about whitening, talk to your dentist first. Read Best Homemade Teeth Whitener? What's Safe and What to Skip.

Get a brighter smile safely

Not sure if strips are right for you? Book a visit. Dr. Desai can check your teeth and recommend the whitening option that fits your smile.

Learn more about Cosmetic Dentistry →