Crest whitestrip supreme
Crest Whitestrips Supreme are peroxide whitening strips placed on the front teeth; use them only as directed and stop if irritation develops.
The short answer
Crest Whitestrips Supreme are flexible strips coated with a peroxide-based whitening gel. They are placed against the front tooth surfaces for the time stated on the package, and they can cause temporary sensitivity or gum irritation.

What does the gel do to molecules within the tooth surface?
The gel contacts enamel and breaks down some stain molecules within the tooth surface. It does not whiten fillings, crowns, veneers, or other tooth-coloured restorations, so those may not match after natural teeth lighten.
How should you apply and remove the strips?
Check the package directions, apply the strips to clean, dry teeth without covering the gums, and remove them after the stated wear time. Do not cut, sleep in, or repeatedly extend the treatment without dental advice.
When should you have a dental examination first?
Arrange a dental examination before whitening if you have untreated decay, cracked teeth, gum disease, exposed roots, or extensive restorations. Stop use and seek advice for severe pain, persistent burning, or marked gum whitening.
Which whitening method fits your teeth and restorations?
Ask whether the shade change is suitable for your enamel and restorations, whether sensitivity risk is increased by exposed dentine, and which whitening method fits your mouth.
Frequently asked questions
Will the strips whiten fillings?
No. They can lighten natural teeth but do not change the colour of fillings or crowns.
What if the gel touches my gums?
Remove the strip, rinse, and allow the tissue to settle; persistent burning or ulceration warrants dental advice.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.
