Free tracked UK delivery30% off 2nd pack
← Back to the shop

Teeth Whitening

What’s the Best Time of Day to Use Whitening Strips: Morning or Night?

By Hammad Madjilani · 4 May 2025

Illustration split between a morning sun and a night sky with a crescent moon

The most popular method for getting a whiter smile at home is using teeth whitening strips. They’re easy to use, convenient, and reasonably priced. However, a frequently asked question is: “Is it better to use whitening strips at night or in the morning?” Although there isn’t a single solution that works for everyone, timing can affect comfort and outcomes.

Using teeth whitening strips in the evening

Less interference from food and drinks

One of the main reasons dentists advise applying whitening strips at night is so that your teeth can recover without being exposed to meals or beverages that can discolour them right away, such as red wine, coffee, or tea. Your enamel becomes somewhat more porous after using the strips, increasing its susceptibility to fresh stains.

Less sensitivity during the day

After using teeth whitening products, many customers report slight tooth sensitivity. Because you will be asleep shortly after applying the strips, you are less likely to experience any discomfort if you use them at night. By doing this, you can prevent sensitivity from influencing your daytime eating or drinking patterns.

Easier to establish a routine

It’s simpler to stay consistent with whitening strips when they are part of a skincare or dental care routine before bed. Compared to busy mornings, you’re typically less hurried and able to give the process your full attention.

What about morning use?

Good for light eaters or fasting

Morning use may be perfectly acceptable if you refrain from eating or drinking anything other than water for a few hours after getting up. In this way, acidic or staining substances do not instantly reverse the results of the whitening strips.

Brighter smile for the day

Some people would rather whiten their teeth first thing in the morning so they can have a brighter smile all day. Using strips in the morning could help you feel more upbeat if you’re getting ready for a big event or meeting.

Pro tips, whatever the time

✕Don’t eat or drink straight after

After using strips, avoid staining food and drink for one to two hours.

✓Don’t brush right before

Don’t brush immediately before applying strips. If you brush, wait about 30 minutes, then apply them to clean, dry teeth.

✓Stick to the recommended use

To prevent overuse, follow the suggested frequency and duration.

Night-time teeth whitening wins for most

Although whitening strips can be used in the morning or at night, most dentists recommend using them at night. It fits in seamlessly with an end-of-day routine, lessens sensitivity, and lowers the chance of re-staining. Whitening your teeth before bed is typically the better option for long-term benefits, unless you have a specific need for morning application.

Crest 3D White Whitestrips – LUXE Edition

From £31.00 with free tracked delivery.

Shop now