Colgate 2in1 whitening toothpaste mouthwash is a toothpaste and mouthwash in one product making this a cost effective method for teeth brushing not only does it clean teeth and freshen breath as toothpaste would but it also protects teeth against cavities and helps to restore the natural whiteness of teeth when using colgate 2in1 whitening toothpaste mouthwash you will notice a light foaming appear that forces its way in between teeth and hard to reach places to help remove the germs tha