Some improvement may be seen after only 3 days. Final results are visible after 10 to 20 days, depending on the specific Crest whitening-strip product used.

Here is my teeth on the 19th. Day. I am finally done using the Crest whitening strips. And I'm so happy with the results I've never seen my teeth this white in my life.

A: The Crest 3D Whitestrips Professional White with Light are designed to be used once daily for 60 minutes total.

Get visibly whiter teeth in just 30 minutes a day with Crest 3D Whitestrips Classic Vivid Whitening Strips. With just 30 minutes a day for 10 days you can remove years of staining.

Leaving whitening strips on for too long can cause chemical burns to your gums. The peroxide in the whitening strips breaks down into oxygen radicals which can damage your gums with prolonged contact. In extreme cases, this can lead to gum recession.

Time Per Application: How long should you wear the strips per application? This is likely to range from 5 minutes to 45 minutes, depending on the strength of the product. Read your teeth whitening instructions closely and follow the directions for best results.

It's safe to brush your teeth after applying whitening strips. Just be sure to do it gently to avoid irritating your gums. Another option is to brush your teeth before using whitening strips. This is ideal for removing plaque, which can get stuck beneath the strips.

LED lights whiten your teeth through their photochemical impact on the tooth surface. On application, the light energy activates the hydrogen peroxide in teeth whitening serum and speeds up the bleaching process. Irrespective of the cause of yellow teeth, it is an effective treatment for enhancing any smile.

Leaving them on for too long can cause tooth sensitivity, gum irritation, and tooth damage. Your dentist can recommend the best whitening strips for your situation.

In order to eliminate stains from the enamel, whitening strips often contain peroxide-based whitening chemicals. They may irritate the gums during this process, resulting in momentary redness and inflammation. This redness can create a visual contrast that makes your teeth look more yellow in comparison.

How long can I wear Crest 3DWhitestrips Sensitive + LED Light? Limit use to just 5 minutes a day. Longer wear time can result in tooth sensitivity. If you are looking for faster whitening results, please try Crest 1 Hour Express + LED Light, See visible results in just 1 hour.

Prolonged Exposure. If you have accidentally left your teeth whitening strips on for too long, it's important to seek dental treatment immediately. These chemicals can cause serious damage to your gums and teeth if not treated promptly.