Do you know what makes regular toothpastes foamy? Let’s learn about: Sodium Lauryl Sulfate (SLS) SLS is an inexpensive detergent and foaming agent that is added to pretty much every conventional soap, shampoo and toothpaste. It can irate skin and eyes, otherwise a widely used, safe agent. The foaming caused by SLS in toothpaste gives you the ILLUSION that the …