The green colored stripe on your toothpaste packaging may mean that the toothpaste is all-natural. By “all-natural” it is implied that the toothpaste does not contain synthetic chemicals or various types of medications and whitening agents.

Blue stripe:

Toothpaste with a blue colored stripe may indicate that the toothpaste is a combination of a natural toothpaste, with added medication. By “added medications” we mean that toothpaste may contain whitening agents or certain types of pain relievers.

Worst of all:

The worst color you want to see on your toothpaste packaging is the black color stripe. A black colored stripe indicates that the toothpaste is 100% made from synthetic chemicals. This is something you don’t want to consume every day.