Review (5/5): This product really works
On the tooth shade guide that comes with this product (pictured) I went from about shade 13 to shade 8 within 5 days of using this product. I then had to travel and have only been using the product a week since I returned and am at about shade 5. Huge difference is visible. I did purchase refills for the gel that comes with the prodcut but will probably not use all of the refills. My teeth were very yellowed from coffee/tee/nicotine and are now very normal looking without looking overly white like veneers.