Sensa was designed to work with your sense of smell to help trigger Sensory Specific Satiety.

The scientific principle behind Sensa is remarkably simple. As you eat smell and taste receptors send messages to your brain which release hormones that tell your body it's time to stop eating. This is a phenomenon we call Sensory Specific Satiety. By enhancing smell, Sensa Tastants were designed to help speed up the process and trigger your "I feel full" signal, so you eat less and feel more satisfied. Because Sensa works with your body's natural impulses, rather than against them, there are no feelings of hunger or intense cravings.