Toothpaste

Purpose: From my research, I learned that sodium lauryl sulfate is the main ingredient in toothpaste that cleans the teeth. I also heard that it is toxic while used by itself, so I wanted to determine how diluted it is in toothpaste.

Process: I am staining eggshells with coffee so I can use the different dilutions of sodium lauryl phosphate to see which one is most like toothpaste.