I’ve got them Simon Cowell teeth. They’re shining. That’s why I’m always smiling. It’s so simple. Start by brushing your teeth. Then dry your teeth and apply the Wisdom Whitening strips. Leave for 30 minutes, remove and brush your teeth again. Use for only 30 minutes a day for just five days for up to six shades whiter teeth. You’ll be grinning all day, just like me. Wisdom has loads of great products to whiten your teeth, so sometimes I use this gel pen in between using the strips. You can grab the Intense White range in boots and Superdrug.