Teeth Whitening Pen

1. Prep. Brush, then dab your teeth dry with a tissue so the gel can grip.

2. Paint. Click the pen until gel reaches the brush, then paint a thin layer over the front of each visible tooth.

3. Set. Keep your lips off your teeth for about a minute, then hold off on food and drink for a while. Check the pack for the exact timing.

It works gradually on surface stains rather than overnight. Use it consistently as directed on the pack, and go easy on coffee, tea and energy drinks while you do. Results vary from person to person.

No. It's the size of a pen, lives in your pocket or gym bag, and takes seconds to apply.

No. Whitening only works on natural tooth enamel, so crowns, veneers and fillings will keep their current shade.

Some people notice mild sensitivity with whitening products. If that happens, use it less often or take a break, and check with your dentist if it doesn't settle.

Yes. One sharpens your face, the other brightens your smile, and both fit in one pocket.