an inexpensive way to whiter teeth [SEP] crest whitestrips are one of the most popular among the store brand tooth whitening products they were introduced to the public in and they have been satisfying customers ever since they work by concentrating special whitening ingredients like peroxide directly against the teeth where they can penetrate the surface for a full thirty minutes repeated usage for fourteen days should result in significantly whiter teethcrest whitestrips claim that these strips can be worn and used any time and that once in place you can go on with your normal daily routine for minutes while the strips have the opportunity to work it is true that you can do what you want but there are certain activities that are not easy to do with one of these strips in place i am one of those people who has a tendency to want to move my tongue around when a have some type of dental object against my teeth and more than once i have accidentally pushed the strips out of place the gel helps to hold them in place but they can still be moved with little effort also if you start talking with a whitestrip in place there is a chance that some of your words will come out a little funny like someone who has had a little too much to drink i have found that for best results i try to do nothing at all when wearing crest whitestrips the best thing to do is read a book the time goes by quickly and it makes it easy to forget the strips are in placewaiting for fourteen days is frustrating and it is possible that you may need a second treatment after the first depending on how well you stick to your minute per day schedule and how well the whitestrips stayed in place but the results should make you happy at first i avoided crest whitestips because of the price and because of the product itself spreading liquid gel on the teeth seemed much simpler than having to wear an object against ones teeth i did not like the idea of hassling with strips so i avoided buying crest whitestrips and tried the liquid variety in its various forms first i finally gave in and purchased crest whitestrips because i got tired of waiting for satisfactory results and i did get good results with these strips i followed the advice on the package and used the upper strips twice per day first then the lower strips twice per day for the next seven days this is a good idea because you can compare the shade of the top teeth with the bottom right after the upper treatment is completed i could see a significant difference as all those years of soda pop coffee tea and other staining drinks were suddenly washed awaycrest whitestrips use the same chemicals that dentists use to clean and whiten teeth so they are safe if used as directed they are designed to keep teeth white for six months after each fourteen day period of usage they also come with a money back guarantee in order to get the guarantee if you are not satisfied with the results you can get a full refund of the purchase price provided you have followed the correct procedure for a refundcrest whitestrips work well but like other over the counter whitening products they only work on natural tooth enamel they will not whiten dentures caps crowns or other artificial dental material if you have teeth with artificial surfaces that are badly stained you will need to seek the help of a dentist or other professional to get rid of the problemcrest whitestrips are a little more expensive than the liquid whitening formulas but crest whitestrips are also more effective i am satisfied with crest whitestrips and i recommend buying a box for effective treatment of discolored teeth they are not as thorough as the treatment provided by a dentist but all things considered these strips are a good buy they eliminate stains and return your teeth to a more youthful appearance in only two weeks if used as directed