Dry-erase markers have no ingredient list! What are we to do? (And how is dry-erase ink erasable?) ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all episodes of Ingredients here: http://bit.ly/WatchIngredients ➡ Get updates and tweet episode ideas @georgezaidan About Ingredients: Join MIT-trained chemist and science educator George Zaidan as he tries to recreate everyday household products like toothpaste, lipstick, or shaving cream using only natural ingredients… and no recipe! H