Toothpaste with a green stripe
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.