The first step of the process is to identify whether the product is made from sugar. If it is sugar, I will be interested to see if it has the chemical symbol for sugar. The FDA allows the sugar of other natural ingredients to be used in the preparation of natural dentifrice (sugar-free dentifrice). However, they cannot be used for commercial purposes. It is important to get an ingredient list to avoid buying commercial products. Many manufacturers have their own lists, which you may not be able to access. For example, some manufacturers use the ingredient corn starch and some don't. The next step is to identify whether the ingredient is from the human body or the animal. Many products are based on a mixture of human and animal ingredients. It is recommended that you get a list of foods that are free of animal ingredients. If the ingredient is derived from a human being, you need to check for specific ingredients, like vitamin A, which can be found in the human body. To do this, I found an ingredient list for the popular mouthwash, and I made an educated guess based on what I know of the ingredient list. For example, the formula is formulated to contain vitamin A, and the active ingredient is aloe barbadensis.