Sodium lauryl sulfate (SLS) is a surfactant that is commonly used in many personal care products, including toothpaste, because it creates foam, which provides several benefits. The foam created by SLS helps to remove food debris along with your brushing, and it helps active ingredients like fluoride make contact with your teeth. SLS also helps lift plaque from the teeth to leave a clean feeling. SLS is a cleaning agent and surfactant found in many consumer products, according to Chemical Safety Facts. It not only cleans but also helps remove food debris stuck in your mouth and teeth. SLS can be derived from petroleum, but it can also be sourced from a number of natural alternatives including palm and coconut oils.

Some people are concerned about the safety of SLS, but research suggests that concentrations of one percent or less are safe on your skin. However, some people may be sensitive to SLS and experience skin irritation or other side effects. Brushers who are prone to allergies or sensitive to sulfates are generally better off choosing SLS-free toothpastes. Several Sensodyne toothpastes do not contain SLS.

In summary, SLS is a common ingredient in toothpaste that helps to create foam and remove food debris from teeth. While it is generally considered safe, some people may be sensitive to it and experience side effects. Those who are concerned about SLS can choose toothpastes that are SLS-free.