Can the normal brush head be used for the 10 min whitening mode with the whitening pen?
We don't typically recommend using the normal brush head for whitening treatments, although it can be used. It's not the most comfortable, nor is it efficient as the whitening tray is designed to help reflect the LED Blue Light which helps increase the rate of the whitening reaction. For best results, we recommend using our whitening tray that's designed for the 10 minute whitening treatment:
You can find it here: https://tryautobrush.com/collections/dental-grade-whitening/products/whitening-tray