Plot: A woman pitches a product that can relieve back pain; a brother and sister team have a cool way to reduce inflammation in the body; a mechanical engineer hopes to lock in a deal with his high-tech bike lock; and a woman shares her passion about her gourmet tea shots that can be prepared just like espresso drinks. Also, an update on PiperWai, an all-natural deodorant made from activated charcoal, in which Barbara Corcoran invested in during Season 7