Tom’s of Maine Prebiotic Natural Liquid Hand Soap, with the prebiotic ingredient inulin, helps promote the growth of good bacteria. The sulfate-free, dermatologist tested formula has a microbiome-friendly pH and retains skin's natural moisture while helping to maintain a healthy skin barrier. At Tom's of Maine, they use only ingredients that meet our Stewardship standards for natural, sustainable, and responsible ingredients to help empower families to live more naturally.