Sitewide Savings - 20% Off Sitewide + Free Shipping with Rebate! Promo Code: SAVE20Connectivity gel makes it easier to transmit electrical impulses to your skin. This refill tube can be used for any device that requires connectivity gel (also called conductive gel), such as the Sleep Improving Wrist Band (Item No. 205350) and the Motion Sickness Relief Wrist Band (Item No. 203816). It can also be used with our electrolysis devices, including the Fine Facial Hair Remover (Item No. 100871) and the LED Home Electrolysis Kit (Item No 201622). Hypoallergenic. Includes one 7.5ml tube (50+ applications).