I was excited to try this product, as my lower teeth are stained as a result of exposure to Tetracycline as a child. It was very nicely packed. There are plenty of people who use this system. Within the 21 day challenge, my teeth are still not white. They are, however lighter in color. I believe in some clients, results vary. I do know that it works. I choose to leave the retainer in place longer than 9-10 minutes for my teeth, for maximum results. The unit comes with the retainer, a case to put it in to keep it clean, and 4 wands. 1 extra strength, and 3 regular strength. There are simple directions enclosed, however, I had no idea how to get the gel to dispense. After some trial and error, you must turn the top of the pen clockwise until you see a little gel come out of the tip. I am hoping that this will get my teeth white and I can maintain them that way. It is worth the price.