I thought the BriteSmile service would be a good solution to helping brighten my teeth but I was wrong.  They told me to make sure to take something before I went because many people complain of headaches and sore teeth afterward.  I thought it was because of the heat from the light but it was from the peroxide.  I was not told that it was peroxide and when I got home, after purchasing their products, my dentist told me that they would not be good for me.  The person that had me fill out the paperwork before the procedure never even bothered to read the paperwork and to add insult to injury...