you're too young to be worrying about whittening your teeth, if your teeth are moderately discolored it is probably due to intrinsic health issues within the dentin of the teeth and not within the enamel. people these days are so concerned about the way they physically present themselves to the public ~ from wearing the most up to date clothing, colors shoes, make-up, facial/hair make-up, and yes ... the way that their 'smile' presents themselves to others. unless you are abusing your dentition by overuse of coffee/very darkened jamaican tea, smoking cigarettes, cigars, pipes, chewing pitch off of pine trees to use as a 'gum', there is ABSOLUTELY NO REALISTIC REASON FOR YOU TO EVEN CONSIDER, AT YOUR AGE, IN TOOTH WHITTENING PROCEDURES! GET A LIFE! YOU SHOULD BE MORE INTERESTED AND ENCOURAGED BY OTHERS TO SIMPLY BE YOURSELF, BE MORE ACCEPTING OF REGULARITIES AND IRREGULARITIES IN YOUR PHYSIQUE, WORRY MORE ABOUT OTHERS IN NEED AND CONSIDER PERFORMING VOLUNTEERISM WITHIN YOUR COMMUNITY, AND ENJOY YOUR LIFE AT THIS PERIOD AND TIME OF YOUR YOUNG AGE!!! NOW ~ I WANT YOU TO GO! Go ~ use your telephone to call that special person from one of your school classes, YOU KNOW ~ tha' one that you have the hots for. Give she/he a call, and schedule a social event to the movies, go hiking/camping out, enjoy the local hang out scene at the mall ... but what eva' you do, please don't waste it on YEDDA! Your teeth do not need whittening, believe me. If you think that I am wrong, please feel free to send me your most recent pictures of your teeth, and I will be more than happy to excuse myself if I am wrong. mistydowg