i signed up for a free sample of each of these products because i read an article about how if you mix them together they will work wonders. not only did the products not work, they charged about 80 dollars in fees from multiple other "subscriptions" that i signed up for when agreeing to the "terms and conditions" which are bull s**t. regardless, DO NOT SIGN UP FOR THESE PRODUCTS. go to the dentist and get you teeth whitened there! don't be scammed by these companies. read full review »