I purchased this on sale for $12, I've never used whitening products before and am a smoker so was not sure what to expect. Two tubes of paste come in the package, you brush with each type for one minute. The process is easy and the product tastes fine, I don't love or hate the taste. Within a week I was seeing good results and my teeth were obviously whiter by a couple of shades. I definitely recommend this product as an alternative to pricey whitening strips.