I have bought this product from stores in the past and though the packaging looks the same, I assure you this is NOT the same product!!! There is no dispenser for the two gels which makes it very hard to get equal amounts of the two and the directions provided do not Exoslim match the contents of the package. I will not be making a repeat purchase and would not recommend this to anyone else. Im a twelve yr old kid that conshiensus about my teeth. The were pretty brownish from drinking cola. I got this . Ive used whitening gels, and whitestrips (make my teeth xtreemly sensative and bad for gums). The derictions say use once a week. Me, not reading the directions used in 5 days in a row and ran out right away, but my teeth were pearls!! Also hint: the light goes for 10 min. After it goes out, use it again for 20 min with same gel. I have yellow teeth currently, drank sodas such as coke for years and years, have not smoked, tried the product for a week, and have seen no difference in the whitening of my teeth. I'm a teenager as well and I was disappointed this product hasn't worked at all. The rubber trays provided also do not fit my teeth and saliva easily can ruin the process. Not to mention it's uncomfortable to put the tray plus the light transmitter in your mouth for 10-30 minutes. http://drozforskolin.org/exoslim-reviews/