Do the Crest whighting strips work??!

Do the Crest whighting strips work??

I work in sales and I use them every 6 months and stand by them. It takes more time than going to the dentist to get your pearly whites sparkling, but its also a fraction of the cost. My mom is a dental hygienist and she uses them and recommends them to all of her friends. They work great! Your teeth may be sensitive after the first three days or so, but that goes away once you're done using them. Your teeth should stay bleached for about 6 months before you would want to consider using them again, a little less if you drink coffee or smoke. But they get those stains out like they were never there.