Toothpaste is an object that we use everyday. When we look close to the toothpaste, it's easy to find out about their variations on shapes, colors, scents, and taste. However, there is a little secret which most of people do not know about. It's on the lower-back side of its packaging: green, red and black color boxes. ‘Green’ indicates it's made out of all natural ingredients while ‘Red’ is a mixture of natural and chemical, and ‘Black’ is purely made out of chemical ingredients. So, watch out!
