Fluoride is a very controversial product and subject. Some say it is toxic. Some say it is a natural product because it is found in nature: soil for example. I will not debate it here, but if you are someone who wants an oral care product with NO fluoride, HAP PY Tooth Powder is for you.
By the way, there is 0.15% fluoride in toothpaste, or 0.0015 parts per 1 part of toothpaste—that is 1500 parts out of a total of 1,000,000 parts, or 1 ½ parts in 1000. One must assume that manufacturers can disperse 1 part in 1000 to make toothpaste effective. How much fluoride I wonder is actually in each dab of toothpaste on your brush and then remaining in your mouth? Despite this very low volume, warning statements are required on fluoride toothpastes—“keep out of the reach of children under 6.” So what should children brush with? Fluoride is toxic, a poison to the body, in larger quantities than what is in toothpaste.
Sodium lauryl sulfate is another chemical known as a detergent surfactant. It is used in toothpaste for mouth feel and creating foam. It is almost as controversial as fluoride in terms of its potential for causing cancer and being harmful. It is in the hair shampoo I use !!!
Glycerin is usually the second or third ingredient in toothpaste. Glycerin is a member of the soap family and used to improve mouth feel. There is also controversy regarding it leaving a film on tooth surfaces.
Potassium nitrate is a chemical used in toothpaste marketed to address tooth sensitivity. It does not work by curing the cause, which is usually exposed dentin at the gum line. It interacts with the nerve endings in your dentin so the sensitivity signals are blocked to the brain.
I prefer my bathroom vanity and sink to look clean and elegant rather than black or brown after brushing my teeth. Just my personal preference.