Many products claim to brighten teeth without a prescription, but are usually not safe for long-term use in children, adults, or pregnant women. Some claim to lighten teeth by making them thinner and more porous. Others may claim to do the opposite, making them thicker and more porous. There are no good studies on whether these products actually work. They may increase the risk of heart attacks, cancer, and other health problems in the long term. What are these products, and why should I try them? There are several types of brightening toothpastes, but they all share several common features: They are often marketed as "natural", "non-chemical", "natural and organic", or "natural and homeopathic". Some products claim to be more effective than others, but there is little evidence about which products are more effective. They contain ingredients such as sodium laureth sulfate, magnesium ascorbyl phosphate, titanium dioxide, and vitamin E. They are usually made from natural ingredients. Products that are advertised as being "organic" are generally not organic. There are no quality standards on these products, nor is there evidence that they are safe or effective. Consumers should know that the product is made from a natural, non-toxic, non-toxic, non-irritating ingredient. These products don't contain any artificial chemicals.