A natural preservative in some applications, Carrageenan is primarily used to thicken the toothpaste for a better cleaning experience. While Carrageenan has no nutritional value, it can be found in not only toothpaste, but also in many dairy products (ice cream, yogurt, chocolate milk), non-dairy milks (soy, coconut, and almond), whipped cream and coffee creamer, canned soups or broth, frozen meals, nutritional bars and drinks, as well as some deli meats.
Carrageenan is a natural ingredient derived from red seaweed, chondrus crispus, also known as Irish moss.
Carrageenan is helpful in stabilizing and thickening the consistency of toothpaste. Most Crest Pro-Health Toothpastes contain the ingredient as a thickening agent so you can get a more secure dollop of toothpaste on your toothbrush.
Though there has been much debate over the safety of carrageenan, it is widely accepted as a nontoxic ingredient. The use of carrageenan in toothpaste is considered harmless and the ingredient is recognized as safe by the US Food & Drug Administration.
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