I recommend a light and easy-to-use oral spray.

This is a Dentist product, which is very famous for oral care. I usually buy the multi-pack because it is cheaper that way. It is expensive if you buy them individually at Olive Young. If you spray it when it is difficult to brush your teeth, when you are sleepy, or when your mouth feels dry, it gives you a refreshing feeling, even if it is not quite the same as brushing. It is an essential item that I always carry with me wherever I go. I have recommended it to many of my acquaintances, and they have all bought it as well.