Healthy You The final ingredient to watch for is another hormone disrupter called Sodium Lauryl Sulfate or SLS. “ It's a foaming ingredient which is used in toothpastes and in shampoos, and it's also used in antifreeze and in car shops," ( Source : http://www.oprah.com/world/A-Beautiful-Earth-a-Healthy-You/1) “ It's a good idea to try and stay away from that."